1. Introduction
The concept of sustainable tourism development (STD) has emerged due the intent to decrease the consequences of mass tourism in the last forty years. The first important document to present sustainable tourism (ST) is the Rio+20 Outcome document [1]. The document states that “the only correct way to develop society is to alleviate poverty, strive for a society of social justice and conserve natural resources” [2]. Therefore, it can be concluded that ST provides guidelines for developing tourism in environmental, social, economic, and climate-sensitive planning or management [3]. However, based on a literature review, we can assess that the authors define sustainable tourism differently in their works. In terms of content, the concept is divided into uncovering natural sustainability [4], which leads to the emergence of the terms ST [5], eco-tourism [6,7] and green tourism [8], and the emergence of social sustainability, within which the terms responsible tourism and ST appear [9].
It is also necessary to mention the role of innovative technologies for ST. Innovative technologies in ST impact organizational efficiency, productivity, and environmental sustainability [10]. The development of technologies also contributes to the development of society. The importance of residents for ST is also natural as the main initiative and action must come from them. Likewise, managers must be equipped with practical tools and mechanisms to make the best possible decision in line with the destination’s ST and enterprises. However, even with the risk of negative consequences resulting from the application of new technologies, we see their potential to eliminate threats to sustainable environmental development. In this article, the authors present the evolution phases of ST by analyzing research articles published from 1990 to 2020. Since there are many papers, it is necessary to apply an alternative analytical approach that will enable us to categorize the data effectively and successfully. The categorization process enables researchers to explain the research phenomenon appropriately and clearly. Furthermore, the authors used automated content analysis to determine major themes and concepts of interest throughout their historical emergence [11], rendering a comprehensive analysis of the development of the field of sustainable tourism.
The study thus goes beyond the Rasoolimanesh et al. [12] article’s content, which focuses only on a systematic review of sustainable tourism indicators concerning Sustainable Development Goals (SDGs). It also goes beyond the Streimikiene et al. [13] article’s content which is limited to sustainable tourism development and competitiveness. The article authored by León-Gómez et al. [14] is based on a bibliometric analysis of sustainable tourism development and economic growth studies. The article differs significantly from the existing study both at the methodological and content level–the focus in this paper being on articles concerning the impact of sustainable tourism on economic growth. Meanwhile, Xu et al. [15] try to identify new methodological areas of application to sustainable tourism studies for both quantitative and qualitative methods. The review methods are focused on big data.
The paper structure includes the following sections: introduction, followed by research method, including data collection, literature selection, data analysis and ACA findings. The paper ends with a discussion of the findings and conclusions, including a comparative analysis of the results, research limitations, and future research suggestions.
2. Research Design
2.1. Data Selection
A systematic review of the literature was conducted using the Boolean operator (AND): sustainable tourism *, development, tourism *, sustainability and tourism *, sustainable tourism. In addition, the authors used the online Web of Science (WOS) database: Social Sciences Citation Index (SSCI), and Arts and Humanities Citation Index (A & HCI), to search for scientific journal articles published in the English language.
The article uses the ACA to assess the evolution of knowledge on sustainable tourism and discover previously unexplained knowledge gaps [16]. Figure 1 shows the number of publications classified as ST available in the WOS from 1990 to 2020. The stacked bars indicate the total number of published articles. A total of five thousand three hundred eighteen articles published in 390 peer-reviewed journals were identified in the WOS. The literature review is prepared according to the Prisma 2020 technique. The process is presented in Figure 2.
After a manual review of titles, abstracts, and keywords, 238 irrelevant articles were excluded. The reason for rejection was discrepancies in the content. In most cases, the content was not related to the tourism industry or was not related to the tourism sustainability theme. Finally, article data (title, abstract, keywords) were exported as PDF files from the WOS for further analysis. Figure 2 shows the phases of the literature mapping process used. Thus, of the 5080 articles published in 372 journals, the ACA was implemented.
Among the leading scientific journals that have published research on ST between 1990 and 2020 are Sustainability (896 papers), Journal of Sustainable Tourism (633 papers), Tourism Management (239 papers), Journal of Cleaner Production (126 papers), Current Issues in Tourism (113 papers), Annals of Tourism Research (110 papers), Journal of Coastal Research (88 papers), Ocean Coastal Management (87 papers), Tourism Geographies (72 papers) and the Asia Pacific Journal of Tourism Research (71 papers).
2.2. Automated Content Analysis
For textual analysis, we used ACA that was performed with Leximancer 5.0. Authors performed ACA (text analysis) with the program using a Bayesian learning algorithm, which allows the decomposition of larger parts of the text into a conceivable number of specific topics in the selected text (terms) [17]. Leximancer created a concept folder based on the relationships between the two topics and terms based on a topics and terms search.
ACA uses a set of algorithms based on probability models to analyze content. The probability models are divided into different parts. Thus, they are distinguished by “topic models” or “concept mapping models” [17]. The goal of the algorithms is to detect opaque thematic compositions in the literature. The thematic composition describes the main topic of the literature collection and shows the frequency of their occurrence and their interrelationships. Algorithms of identifying a theme and classifying the literature based on themes serve as a guide for classification [18]. The concept of the ACA seeding process has a significant impact on the research outcome, as it contains two key features that contribute significantly to the applicability of the method in reviewing and synthesizing large amounts of text. For example, ACA can process large amounts of text faster than manual methods of literature synthesis. Another feature of ACA that contributes to its usefulness and significantly affects the study’s outcome is excluding unintentional human bias, which significantly impacts the results of the study itself. In manual classification, people are exposed to various influences (external environmental disturbances, fatigue, personal biases) that they are unaware of and cannot even report [17]. The most important ability of the ACA is to mitigate all these external subjective influences.
Therefore, ACA develops its concept of categories from textual data, using strategies based on the “grounded theory” of mutual information, and plans data collection and analysis using an iterative process of pop-ups [17]. Of course, ACA is not entirely free of subjectivity as it requires human input (e.g., manual seeding concepts).
The authors’ main considerations contribute to the applicability of ACA. First, the authors interpret the results of ACA based on their own experience and evaluation of the article’s analysis. Second, the authors must place the summarized literature itself in the context of tourism sustainability development.
2.3. Results and Thematic Concerns in Scientific Journal Articles
By analyzing the titles, abstracts, and keywords of 5080 papers published in 372 journals, 45 concepts and four themes were identified. They are presented in Table 1. The themes identified in the analysis are “development”, “management”, “change”, and “tourists”. Figure 3 presents a concept map based on themes (coloured circles) and concepts that form a single theme (text within themes in black font). The importance of the topics is represented in colours such as by heatmap (the lighter the colour of the topic, the more often it is found in the analyzed text) and size (the larger the topic, the more concepts it contains) [19].
Table 2 presents the results of “more quantitative analysis in ranked bar chart format of the most central concepts with a particular category–defined via a measure of the combination of their strength and frequency characteristics. Prominence is given by the joint probability/product of marginal probabilities; for example, given the attributes a and category c, prominence is equal to (the co-occurrence count for a and c)/(total number of context blocks in data set)/(occurrence of a/number of context blocks) × (occurrence of c/number of context blocks)” [20].
3. Discussion
3.1. Evolution of Sustainable Tourism Development between 1990–2000
Papers published between 1990 and 2000 deal with environmental protection, eco-tourism and sustainable tourism development. In 1992, at a conference in Rio de Janeiro, Agenda 21, the Rio Declaration on Environment and Development and the Statement of Principles for the Sustainable Management of Forests were adopted. Agenda 21 has influenced the emergence of the development of sustainable tourism worldwide [21].
3.1.1. Action Management for Eco and Green Tourism
Concepts of eco-tourism (theme management) and green tourism are concerned with the establishment and management of appropriate strategies/action plans for eco-tourism, green tourism and sustainable tourism development, not only to improve the local economy. including in many underdeveloped areas, but also to mitigate conflicts among the locals and achieve the goal of biodiversity conservation [22,23]. During the period 1990–2000, eco-tourism became a sustainable alternative to mass tourism in protected areas (national parks) and provided benefits to local communities that bear the highest opportunity costs of conservation. Thus, the concept of “ethnic tourism” evolved. The authors, mainly from developing countries, point out the unequal distribution of employment and revenue in tourism, as park managers favour external operators over local people. They also note that eco-tourism has not yet established itself in the national park peripheral areas [24]. It is also important to point out the awareness regarding African countries of the need to regulate wildlife hunting and establish a model for an optimal revenue/payment system that benefits the local population and the wildlife conservation program. At the same time, it is necessary to introduce other non-consumptive forms of nature-based tourism, such as bird watching and photographic tourism [25].
Eco-tourism has emerged as a form of future tourism. The importance of social policies for decommodification that are accessible to all and that prioritize social goals and human rights, such as the right to work or a decent standard of living, over economic values and goals has also come to the fore. The distinction between commodification and decommodification can also be applied to eco-tourism development. Commodification processes occur when the outcome is defined as the economic value of a product. The problem of eco-tourism’s focus on commodifying nature in search of global profit and the tourist dollar in capitalist economies is salient. The negative impact of such a path on host communities requires decoding policies for sustainable eco-tourism. Rather than looking almost exclusively at industry profit, eco-tourism must add social value to the local environment and economy [26].
Tourism approaches that make this possible include those that take into due account ethnic communities, the quality of tourism interactions with local communities and nature, an ethic that cares about protecting the natural environment, and a willingness to understand the consequences of human actions in the natural environment for the local economy [27].
Therefore, it is important to adopt innovative processes and business models and to develop resilience toward change and global (local) host communities. It is also important to develop criteria for a possible match between avoiding the consequences of globalization on tourism and the preservation of tradition, cultural identity and heritage (destination culture) in the eco-tourism industry [28,29].
The main problem of sustainable local eco-tourism industries is that global processes can come into play. Solutions for local eco-tourism development should also be incorporated into policies for more informal practices, such as government regulation and industry self-regulation through greater adherence to codes of ethics and certain restrictions on tourism capacity at host sites [26,30]. However, care should be taken not to over-apply strict sustainability criteria which is problematic as such development practices can create spillover effects that hinder sustainable tourism whether regarding concentrated, dispersed or low activity. Their limited value justifies tourism-focused development policies (thematic development) in achieving strong sustainability goals at broader sectoral levels. Accordingly, it is argued that in addressing these issues, policy should focus on enabling coordinated strategic planning interventions rather than relying on market-based tools and processes [31]. The question of whether eco-tourism is sustainable has also come to the fore [32].
At this point, it is necessary to ask whether tourism contributes to sustainable development and, if so, how. First, it is necessary to separate the meaning of tourism’s contribution to sustainable development from sustainable tourism, as the development approach in a particular sector may overlook important links to other sectors [7]. Secondly, if tourism contributes to sustainable development, its economic performance, ecological sensitivity and cultural appropriateness must be ensured. On the other hand, eco-tourism has emerged as sustainable tourism [33]. It should be emphasized that when interpreting sustainable tourism and the impact of tourism on sustainability, attention must be paid to possible terminological ambiguities. In the late 20th century, it was assumed that eco-tourism would challenge destinations for economic, environmental, and cultural reasons, even in its purest form. It is a particularly true assumption in cases where destinations compete for limited resources and displace existing purposes and users. It should be emphasized that sustainable tourism and eco-tourism are not synonymous, as certain forms of eco-tourism may not be sustainable. If eco-tourism contributes to sustainable development, it must be carefully planned and managed [7].
Regarding the connections between tourism and environmental protection (theme management), it should be noted that the articles in this period focused on marine and coastal management. In these articles, the authors explore and present approaches to ocean governance in which the development and implementation of regional ocean plans play an important role [34,35]. These projects are “based on large marine ecosystems designed to integrate sectoral commercial interests and conservation objectives” [36]. With the development of regional marine plans, detailed policies also need to regulate different marine uses and impacts and marine regions. These policies address various policy instruments and their potential roles in the management and use of marine resources. For example, the so-called incentive instruments include financial and economic instruments, legal and regulatory instruments, education, co-management, voluntary approaches, community-based mechanisms and research. The purposse of these potential management tools are the following: to ensure water quality of rivers, estuaries and oceans; help create conditions for sustainable fisheries; ensure sustainable marine tourism and recreation; manage conflicts between users and stakeholders; ensure environmentally friendly maritime transport as well as and oil and gas exploration and mining [35,37]. In addition, research into the importance of renewable energy in the context of sustainable destination development has also come to the fore [38].
3.1.2. The Role of Supply and Value Chains of Tourism Enterprises
Policies and guidelines for managing supply and consumption play an important role in tourism and sustainable development. For example, enterprises must consider environmental aspects when carrying out their activities and not harm the operating environment. Therefore, in the context of sustainable development of destinations, it is necessary to focus on the role of enterprises in the tourism industry and focus on the management and control of supply (demand) and demand (consumption) policies [39]. Based on the guidelines, the regulator can make recommendations to improve the implementation of tourism services. The regulator achieves this by carefully reviewing business and environmental measurements and training tourism staff to manage destinations in line with the concept of sustainable development and raising consumer awareness of the importance of and opportunities for sustainable behaviour [40]. Tourism enterprises need to consider supply and demand in the context of their activities. Based on the analyses, this will provide them with the necessary information about business shortcomings that will enable them to eliminate unsustainable business processes in the future. All actors operating within the value and supply chain of the organization and destination are important for sustainable tourism development. Therefore, it is necessary to manage supply chains and destinations on the one hand, and on the other hand, to take care of consumer education through methods that allow tourism to be aligned with sustainable development. Enterprises must control the entire supply chain and ensure that all members strive for sustainable tourism [40,41].
3.2. Evolution of Sustainable Tourism Development between 2001–2010
Agenda 21 was strongly reaffirmed during this period in the Program for the Further Implementation of Agenda 21 and the commitments made to Rio Principles at the World Summit on Sustainable Development (WSSD) in Johannesburg, South Africa, in 2002 [42].
3.2.1. Sustainable Tourism Development Policies and Their Impact on the Rural Environment
The articles on sustainable tourism development (theme development) focused on developing sustainable tourism policies that would encourage new business forms, increase employment and support landscape conservation. Thus, the European Charter was adopted for Sustainable Tourism in protected areas. The Charter provides a reference methodology for local development and involves local stakeholders in defining sustainable policies. It has been shown that in many cases, integrated sustainability indicators are developed through a participatory process. These indicators include indicators suitable to measure and assess the evolution of development policies over time, integrate sustainability to reduce negative environmental impacts and promote the preservation of local and traditional values [43].
To develop sustainable tourism, it is also important to focus on integrating cultural heritage into tourism products. Articles dealing with this topic come from the resource-based view theory, in which cultural heritage is understood as an important resource for destinations seeking sustainable positioning [44]. However, the difficulty of transforming heritage from an asset into a resource often stems from the lack of convergence between institutions responsible for heritage conservation and tourism. Therefore, it is necessary to establish coordination based on a three-phase process. Such coordination addresses management paradoxes essential for a joint effort to preserve cultural heritage and develop tourism [45].
Also, in this period, there are projects of conversion to renewable energies (theme management) to improve the environmental conditions of the tourist destination (e.g., reduction of pollution), which will have a positive impact on the sustainable development of the destination and improve the living conditions of the locals [46].
Thus, the Sustainable Development Guidelines (theme development) for 2001 to 2020 exhorts that the guideline for tourism development must include economic growth and become a tool for improving the quality of life and employment, especially in rural areas [47,48]. Therefore, it is necessary to promote innovation and quality standards, focus on sustainable responsibility, develop skills, promote sustainable and viable products and use tourism to promote social inclusion, territory and politics [49].
3.2.2. Environmental Protection
An important part of the research in environmental protection (theme management) was marine and coastal management. The articles point to the importance of incentives for poverty alleviation and empowerment, including education and employment, for a large segment of the coastal population. Employment opportunities lie in marine and coastal resources and services [50]. There needs to be the political will to fund and prioritize projects based on relevant international conventions, particularly UNCLOS with the exclusive economic zone, Common Human Heritage and other provisions, Agenda 21, UNCED and the oceanic goals WSSD 2002 [51]. Programs must ensure that the overexploitation, depletion and degradation of resources, habitats and coastal ecosystems, global change and economic transformation, and the social situation of poverty, employment and inequality are addressed. Coastal populations’ socio-economic and human security needs must be met to adequately manage and protect natural resources, including ecosystems and their services, habitats, and biodiversity. One way to achieve this goal is to represent and grow about 50% of the world’s population, fight poverty, and cope with insecurity and changing employment, environmental and sustainability conditions through appropriate coastal and marine resources management. It includes providing education and knowledge about these resources and their proper use. These include energy, water, food, transportation and trade, communications, coastal development, tourism, nautical, recreation and ecosystem services, and the need for proper management [52,53].
In the context of environmental protection, the authors also stress the need to protect mountains and establish sustainable mountain tourism because, in mountainous areas, human survival is closely linked to ecosystems. Therefore, it is necessary to ensure proper coexistence between locals and stakeholders [54,55].
3.2.3. Problematics of Mass Tourism
One of the consequences of mass tourism mentioned in studies is the construction of airport infrastructure (thematic development) to meet the increasing demand for tourism and air travel in general. This leads to problems in ensuring sustainable development. To ensure sustainability in the aviation sector, an alternative to the traditional airport landing fee pricing structure would need to be found that reflects the real costs (both financial and environmental) that aviation imposes on others [56,57].
With the accelerated development of mass tourism, tourism development (theme development) between 1990 and 2010 became the backbone of developing economies in many developing countries (South America, Africa, and Asia). Its proponents argue that it contributes to sustainable development, poverty reduction and integration into a globalized economy [58]. However, scholars and activists began to draw attention to ecological degradation, profit skimming, distorted cultural patterns, rising land values, and prostitution associated with tourism. In addition, it is pointed out that tourism perpetuates existing inequalities, fiscal problems, and social tensions [59,60]. In the context of tourism development in developing countries, it has been noted that there are cases of devaluation and marginalization of workers and sexualization of their labour [61]. At best, most people are pushed to facilitate low-paying jobs in the formal sector, unemployment or fleeting activities in the informal sector that involve commodifying sexuality and affective relationships [62].
3.3. Evolution of Sustainable Tourism Development between 2011–2015
Articles published between 2011 and 2015 are characterized by focusing on tourism as a major user of the environment as well as its role in contributing indirectly to environmental degradation. This is mainly due to the increase in tourist travel, which harms the environment and reduces the possibilities of sustainable tourism development in the long term. If we want to reverse the negative trends in the impact of tourism on the environment, we need to promote activities and services that have a low impact on the environment [63]. It is necessary to focus on eco-tourism, the development of tourism in rural environments, including promoting agrotourism and wine tourism, tourism in protected areas, cultural tourism and adventure tourism [64]. It is also necessary to raise the awareness of tourists and ensure that they change their behaviour and find satisfaction in sustainable forms of tourist services and products offered.
The results of global studies have shown that tourist understanding of and receptiveness toward sustainable forms of travel is sufficient. However, the supply of such services was still modest during this period due to tourists not being aware of such a supply and the insufficient fulfilment of the requirements by the users of such tourist services, especially in terms of behaviour [65].
3.3.1. Sustainable Tourism Practices for the Protection of the Natural Environment
After 2011 eco-tourism became important because of its impact on environmental protection (theme change). If we wish to achieve sustainable eco-tourism development, it is necessary to achieve the right combination of economic prosperity and ecological protection and social benefits. Therefore, in eco-tourism development processes, it is necessary to coordinate interests between the main stakeholders (government, tourism enterprises and tourists), significantly impacting the decisions taken and the satisfaction itself. Only mutually coordinated stakeholders will significantly impact sustainable eco-tourism development, which will trigger new styles of economic development related to sustainable eco-tourism and the environmental protection system using measurement approaches [66]. Such examples are visible in the context of trails where people both recreate and observe nature and wildlife. However, few studies have combined ecological and cultural attributes to assess the eco-tourism potential of trails in terms of recreation planning. Seasonality has also been neglected in tourism research. In order to spread tourists throughout the year and mitigate the negative impacts of mass tourism events, hiking areas have begun to adopt an integrated framework for assessing the eco-tourism potential of trails that takes into account species, habitats, landscape values and local heritage while taking into account seasonal differences [67].
In the context of sustainable development and environmental protection (theme change), it is necessary to mention lakes as one of the world’s most popular tourist destinations. Climate change greatly impacts the characteristics of lakes as a tourism market because the climate is an important source of lakes and coastal tourism. Therefore, it is necessary to anticipate the possible impacts of global climate change on lakes, as it is emphasized that the impact of climate change on tourism will mainly affect coastal and mountain areas [68]
With the rapid development of tourism resources and the tourism industry, there has been a conflict between economic growth and the ecological environment (theme change). In the context of the harmonious development of the ecological environment, it is also necessary to find the right paradigm for tourism’s economic development. The paradigm must be substantially calibrated to protect the sustainable use of eco-tourism resources, focusing on the energy self-sufficiency of tourist facilities (introduction of solar panels, heat pumps) and emphasizing the constant development of various stakeholders who must be aware of the need for environmental balance [69].
3.3.2. Management of Protected Areas
Sustainable tourism has emerged as the dominant paradigm for managing visitor use in protected areas. An important consequence of this approach is that protected area managers (nature and landscape parks) focus on important issues for the development and protection of protected areas. For example, after 2010, the European Union focused on a landscape approach (such as the European Landscape Convention [ELC]). These strategies seek sustainable landscape conservation and often identify tourism as an important development strategy (theme development).
3.3.3. Maritime and Coastal Cultural Landscape
The articles also dealt with the maritime and coastal cultural landscape. Research has focused on both the land and the sea as well as below sea level. These areas represent an important part of human cultural resources in coastal areas (topic change). In the past, integrated coastal zone management (ICZM) has indeed theoretically addressed the importance of cultural ecosystems. However, cultural resources have been more or less ignored in integrated coastal management plans. The consequences of neglecting cultural resources can be seen in the loss of cultural identity associated with certain habitats. Environmentally, there is a loss of development opportunities in tourism, recreation and education, and a decline in local knowledge of ecology, skills and technologies related to habitat management. This is leading to the loss of opportunities related to social and cultural capital. In the context of both the documents and the case studies, it is clear that no adequate definition and evaluation of coastal heritage has been made. However, it is also necessary to point out that such coastal cultural heritage is not considered a resource with great benefits for development and people [70].
3.3.4. Rural Tourism Development
In rural tourism development (theme development), the development strategy of some rural areas has come to the fore. The landscape has become the central attraction for visitors. In rural areas, tourists are attracted by different vegetation and colours and architectural heritage, which prove to be key elements of the tourist experience, but which are followed by a complex group of mostly non-visual stimuli, including sounds, smells, tastes, human contacts, nature, in its broadest sense, and the past [71]. If regions are to become a centre of tourist interest, landscape development actors must work at all levels to achieve a comprehensive integration of tourism and landscape management in terms of marketing, product development and nature conservation. In their research, the authors noted the differences between visitor groups, suggesting that different visitor groups require different approaches [72,73].
In the context of managing rural tourism development, stakeholders face several challenges, such as managing factions and enclaves within the community, catering for new entrants in terms of risks and vulnerabilities, ensuring long-term commitment of leaders, creating continuity from one leader to the next, and coordinating joint management across many governmental and non-governmental organizations. Research shows that each leader uses a different approach, including professional, shared/authentic, and authentic leadership [74]. For rural tourism operators, the success of connecting and networking social capital within the state is important, regardless of their management approach. The external connection between residents allows for the joint promotion and design of tourism development and enables an approach to develop a thematic village concept. However, it should be noted that the social orientation and inward-looking perspective of community tourism may hinder the effective adaptation of local resources to market needs, thus preventing sustainable growth of community-based rural tourism [75]. In the development of rural tourism, agricultural heritage has become increasingly popular as a tourist destination. However, the arrival of large numbers of tourists poses significant challenges to these fragile ecosystems. In particular, water resources are under extreme pressure. Therefore, before promoting sustainable tourism, an assessment of the water footprint of tourism is proposed [76].
3.3.5. Climate Change and Coastal Development
Climate change and coastal development (theme change) are affecting coastal erosion, leading to a deterioration in the quality of beaches and thus a decline in the attractiveness of coastal areas, which in turn leads to a deterioration in economic impact [77]. Social responses to these problems have resulted in hard/soft engineering methods to mitigate erosion and provide quality rewards that support the value of recreational beaches [78]. Management approaches have demonstrated the ineffectiveness of strict measures to stop erosion and its negative impact on the quality of the environment. Such management approaches have been used as an emergency response to problems and have not been based on sufficient knowledge of the potential consequences. In contrast, successful experiences with soft methods have allowed the natural conditions of beaches to be maintained and the quality of tourism to be improved. Awards for the quality of beaches have made it possible to meet the needs of tourists and promote a good image of beaches [79].
3.3.6. Social Impacts Management for Tourism Organizations
Due to the numerous unsustainable practices of the tourism industry, it is necessary to examine the possibility of establishing measures in real environments based on the criticisms made in the theoretical discussions. Therefore, it is necessary for business strategies of tourism enterprises and destinations to include the management of social impacts in the context of tourism. in the [80]. In developing research methods, social management systems, environmental innovations and initial actions, a pragmatic approach is required, based on actual operational constraints and existing systems in the tourism industry. For example, hotels usually introduce innovations in their operations that are important for protecting the environment. However, soft measures in human resource management are also important, including managerial salaries based on environmental performance, employee satisfaction, environmental accounting and education. Managers must be aware of the importance of using environmental management systems and linking them to introducing innovations that reduce operating costs [81].
Nevertheless, it is also important that hotel categorization (stars) is linked to innovative solutions that provide a higher quality level of hotel infrastructure and help hotels achieve high employee awareness by introducing wastewater treatment, noise reduction, soundproofing and improved visual impact [78]. In contrast, the role of information sources in interpreting innovation uptake varies according to the technical complexity of the innovation [82].
3.3.7. Emergence of a New Form of Sustainable Tourism
In the 21st century, a new form of sustainable tourism has emerged named slow tourism (theme development). The definition of slow tourism states that it is a form of sustainable tourism that emphasizes the importance of tourism campaigns based on a slow and restful orientation to achieve life values and improve wellbeing. However, despite sufficient theoretical foundations, soft tourism faces challenges in practice. For this reason, it would be necessary to prepare training for both managers and consumers and create an economic value chain that allows for the formation of industry alliances. Thus, in theory, a slow tourism architecture has already been developed to promote slow tourism [83].
Issues of sustainable tourism in the context of global urban development (thematic change) have also come to the fore. Unlike in the past, city governments can now integrate sustainable tourism development measures into urban development projects. However, the municipality must consider environmental issues and the global dimension of the proposed measures. Technological development has enabled stakeholders to solve socio-urban problems and social demands by transforming cities into tourist destinations [84].
3.4. Evolution of Sustainable Tourism Development between 2016–2020
In the last research category, covering sustainable tourism development from 2016 to 2020, we focus on the 2030 Agenda for Sustainable Development, published by the United Nations in 2015. The agenda calls for the implementation of 17 Sustainable Development Goals (SDGs). In terms of content, the agenda regulates and links the three dimensions of sustainable development—economic, social and environmental—and requires that all countries in the world prepare Sustainable Development Goals and implement them by 2030 [85]. From this point of view, it has also become important for the further development of tourism (theme tourism), the lead stream sector in many developing countries, through which all three themes can be efficiently achieved [86,87].
3.4.1. Cultural Heritage Tourism
There is also a need to address architectural heritage, especially tourist heritage destroyed during urban renewal, especially in developing and underdeveloped countries where stakeholders have no interest in protecting cultural heritage. Cultural Heritage Tourism (CHT) has become an important part of the tourism industry. Therefore, it is important to assess the sustainability of CHT objectives for tourism development. Most existing studies have examined the desired sustainability of eco-tourism, considering three stakeholders: Resource management, tourism and the local community [88,89,90,91]. However, it should not be forgotten that it is important for tourism businesses to be involved in CHT-related studies for destination sustainability [92].
3.4.2. Disruptive Innovations in the Tourism Industry
To further tourism development (theme tourism), it is important to emphasize the quality of tourism services, disruptive innovations in the tourism sector, and sustainable development. All these factors directly support SDG-8 (i.e., decent work and economic growth), SDG-9 (i.e., industry, innovation and infrastructure), SDG-12 (i.e., responsible consumption and production) and SDG-13 (i.e., climate change) [93]. The agenda program promotes the further development of sustainable tourism, drawing attention to the need to monitor the use of natural resources and encourage efforts to maintain and create jobs for members of local communities while promoting local culture, services and products and the sustainable use of marine resources, to maximize economic benefits for small developing islands, developing countries and underdeveloped countries [94]. Thus, community member support has become one of the key factors for the sustainable tourism industry’s success in all areas, including rural areas [95]. The continuous development of the community must be balanced across all dimensions of sustainable development. This can be achieved through an innovative approach to developing social entrepreneurship in tourism, providing local communities with new jobs and opportunities for young people to stay in rural areas and contribute their knowledge and ideas to further community development.
3.4.3. The Role of Social Innovations and Digitalization in Tourism Industry Transformation
In the last 30 years, mass tourism has led to economic problems and socio-cultural instability in tourist destinations, which is reflected in the increasing exodus of residents from tourist destinations due to the oversaturation of day tourists in well-known tourist destinations, which could be solved not only by introducing higher tourist taxes and limiting air and sea traffic but also by the digital transformation of tourism and other services. Social entrepreneurship can help develop sustainable, innovative (technological) approaches that help reduce human emissions and thus increase community development [96]. It is identified that state-of-art information and communication technologies play a crucial role when it comes to the revival of the (sustainable) tourism sector in the post-COVID-19 era, especially data mining [97,98], virtual reality [99], augmented reality [100] and Internet of Things (IoT) [101]. Data mining aims to discover useful patterns and knowledge from enormous data about events of importance, users, and their interactions with others and the environment. Typical scenarios include tourist segmentation based on clustering, tourist number prediction relying on regression, excursion and services cross-selling based on association rule mining and booking cancellation prediction leveraging classification methods [97,98].
Social innovation can play an important role in enabling resilient tourism in the post-COVID-19 era [102,103], as COVID-19 is expected to influence the decline of mass tourism and accelerate demand for individual travel and sustainable tourism options [104]. Seeking social contact with locals will come to the fore, and visitors will no longer be satisfied with visibly staged and artificial representations of local cultures [105]. The demand for locally grown food (and drinks) is also expected to increase. There will be a need to offer safe and high-quality food and bring more creativity to gastronomy based on local characteristics but in line with current trends). Small businesses, with a high concentration in in rural areas, are important to developing sustainable and recreational tourism. Successful environments have created partnerships and established a sustainable tourism discourse through linkages that increase social capital. Local development agencies were established in Europe and elsewhere (e.g., Japan) in the late 20th century to connect local communities in order to constructively integrate social capital and obtain funding for local business projects. This led to the emergence of locally-oriented sustainable tourism services [106].
Studies are skeptical about the development of social contact in tourism and emphasize the need to develop concepts of social contact to understand the relationship between tourists and locals and to develop approaches that help develop respect and maintain relationships between tourists and locals [107,108]. A systemic resilience approach has been put forth to increase the number of actors involved in efforts to maintain and develop sustainable approaches to the destination. In the context of community governance, it is necessary to develop relationships between stakeholders based on mutual respect and equality, as this is the only way to formulate and decide on strategies for the further social development of the community. Systemic resilience also enables the creation of elements of social capital that are essential for successful joint management of natural resources (cooperation, transparency, reciprocity and effective communication) [11].
4. Conclusions
4.1. Research Summary
This paper aims to construct and analyze mixed-methods research on sustainable tourism using the ACA. The results show some overlaps between the concepts that have emerged over time. From the analysis results, it can be concluded that the topic focuses on changes in business models, adoption of organizational processes related to climate change mitigation delivery, adoption of clean and smart technologies, the importance of cultural heritage for sustainable tourism product concepts, rural development, green investment, sustainable standards and sustainable reporting.
4.2. Theoretical Implications
An important step towards sustainable development in the tourism industry was taken in 1992 at the United Nations Conference on environment and development in Rio de Janeiro. Since this conference, ST has been considered one of the most important global economic, social, and environmental development issues. ST comes to the fore when it focuses on a specific sector or parameters within the tourism and hospitality industry. Parameters include socio-economic impacts and measures to protect and preserve natural and cultural heritage, the supply of natural resources such as water and energy, and the concept of developing tourism policies in harmony with the environment and people.
Another important step towards further socio-economic and environmental development, which also plays an important role in promoting sustainable tourism, is the 2030 Agenda for ST, adopted in 2015 in the United Nations. It focuses on the 17 ST Sustainable Development Goals (SDGs) that businesses must incorporate into their criteria to ensure sustainable operations.
For many countries, especially underdeveloped and developing countries, tourism is the main economic sector that provides economic growth. In these countries, tourism and hospitality are important economic units for local employment and for maintaining and improving living standards. However, due to poorer environmental standards, these countries are more exposed to the negative impacts of tourism, such as increased pollution and direct pollution (e.g., direct discharge of sewage into the sea, destruction of the natural environment due to overcrowding of tourists, and pollution from increased air and other traffic emissions). All this leads to the need for people who decide on the development of individual regions or countries to make their decisions following the 2030 Agenda, preserve tourism businesses and services, and promote sustainable development. Tourism has become the largest service industry in the world. The number of tourists is constantly increasing, which means that the impact and pressure on the environment are increasing. In response to mass tourism, new concepts and types of tourism have emerged, and several tourism strategies and policies have been developed that promote sustainable principles and allow for personalized tourism products and authentic destinations as added value.
It should be noted that economic performance is often mentioned in the literature as one of the important factors for sustainable behaviour. In our opinion, this is becoming an increasingly important issue for the further development of tourism destinations. Therefore, it will be necessary to conduct thorough long-term research among stakeholders to explore the relationship between commercial success and ensuring and sustaining benefits for the local community.
Tourism is the industry that has been hit first and fastest by the coronavirus epidemic. The health crisis has resulted in global revenue from international tourism falling by about 63 per cent year-on-year in 2020, amounting to around US$538 billion. In 2019, global inbound tourism revenue peaked at about US$ 1.47 trillion [109]. Although a lightning recovery is expected, things will never be the same again. Therefore, it will be necessary to “reset” what has been achieved and develop new strategies corresponding to the new social manners.
Tourists become more discerning consumers, aware of the real seriousness of the consequences of the COVID-19 pandemic and possibly other future pandemics, socio-economic factors and environmental impacts [110]. As a result, the practice of socio-cognitive mindfulness is coming to the fore in tourism, drawing attention to the importance of human existence and the search for solutions to deal with the problems of modern life based on experience [111]. In Western societies, mindfulness is already considered a major driving force in lifestyle change, which can be seen in increasingly conscious consumers and producers of products and service providers increasingly based on mindfulness [112].
Therefore, in tourism, the vision of the Western economy is expected to be one of vigilance, and tourism development policymakers (from state to local levels, both in the profit and non-profit sectors and in public administration) are expected to direct the further development of the tourism sector towards long-term sustainability and promote the creation of more compassionate urban and rural tourism [111]. Vigilance in tourism is recognizable for its positive impact on tourist wellbeing and transformative effects on the tourism experience [113,114] and its potential impact on a sustainable touristic sector plan and employee performance [115].
4.3. Managerial Implications
An important issue for destination owners, investors and managers, hotel and service businesses, and tourism policymakers at local and national levels is how to promote tourism in the post-Covid period by supporting the adoption of sustainable and resilient tourism approaches. In the European Union, for example, Member States can accelerate the digital transformation of the tourism industry under the Recovery Plan and encourage the emergence of projects to adapt city centres to greener and greener centres with limited vehicular access so become oriented towards well-being. In the tourism industry, for cost-efficient operations, it will be necessary to introduce digitalization as well as restructuring and optimizing operations. In doing so, it will be necessary to focus on the retreat of old, unsustainable and environmentally controversial hotel complexes and infrastructures in tourist destinations, especially because sustainable hotel projects in urban and rural areas reduce costs for the owner.
Sustainability is not just about appealing to consumers—it also directly benefits hotels in the long run. The main focus of sustainability projects is to increase efficiency, which often aims to save energy and resources, use free renewable resources and minimize waste. Reducing operating costs and waste can lead to massive, lasting savings for a hotel if implemented correctly and consistently. Although the initial capital cost of some of these projects can be expensive, the savings they bring will offset the expense over time—something as simple as an energy management system can reduce energy costs by 28%. In addition, there is an increasing number of government-backed, low-cost finance options that can help with retrofits and sustainable investments, so you do not always have to shy away from the initial cost.
Individual tourism prospers from the boutique, small and independent hotels and camps that are locally-owned and staffed, and that also allow tourists to become directly acquainted with the local tradition and culture. Sustainability is not just about eco-friendly hotel amenities; it is about creating a sustainability hub within your area by using local goods and products, local materials and food sources, and more. A strong sustainability ethos can strengthen community relations, boost staff morale and increase employee retention. These may be intangible, but they carry much value.
4.4. Knowledge Gaps and Research Opportunities
The COVID-19 pandemic requires the tourism industry to transform traditional, unsustainable business models into sustainable, resilience-oriented business models. Strategists need to devise new concepts to transform the existing tourism infrastructure, built for mass tourism, into a sustainable, ecological and socially innovative tourism ecosystem. It is about more individual, safe and destination-friendly, natural and cultural features of the content of tourism experiences that tourists are willing to pay for.
Therefore, the tourism sector can be expected to be restructured, optimized and digitized in the post-19th century period. For instance, virtual reality (VR), which provides a fully immersive interactive experience within virtual 3D worlds, can be explored in the context of tourism. In this environment, the user can explore the surroundings and interact with 3D objects.
Furthermore, different responses can be generated as an outcome of this interaction, such as animation, text visualization, voice and multimedia playback. Therefore, this technology is highly relevant for tourism, enabling novel usage scenarios, such as virtual tours, museums and destination exploration [102]. Additionally, augmented reality (AR) allows the overlay of animated 3D objects and multimedia content on realistic images coming from the camera stream. This way, many interesting use cases in the tourism sector become possible, such as 3D historical reconstruction enabling to relive the past at historical locations, self-guided sightseeing and exploration [103], which are especially important under new circumstances [116] for post-COVID tourism [104]. Finally, the IoT refers to the network of small, low-power devices ranging from affordable credit card-sized microcomputers to sensors and smart tags. Apart from tourist experience enhancement, IoT is crucial for tourism in the post-COVID era, as these affordable systems are responsible for tasks that aim to reduce this spread of the disease, such as mask detection, contact tracing, and air quality control [117]. Moreover, assistive robots based on affordable IoT devices can be used for different purposes, such as surveillance of monuments and museums or interaction with tourists [118].
Based on the analysis of the current issues, the following research questions can be proposed as suggestions for future research.
The central question is: What changes in the development of sustainable tourism are most likely to occur after the COVID-19 crisis? The second question concerns whether a destination has the knowledge to move from mass tourism to individual tourism, where the central theme of tourism services and products is focused on the integration of natural and cultural heritage to enable added value to the destination’s rural ecosystem. Finally, the third question focuses on the role of new technologies for more sustainable tourism and raises the question of how guests will adopt these technologies.
4.5. Study Limitations
The first limitation of the study is the selection of WOS journals as the primary research source. However, this limitation can be overcome by including other documents such as books and conference papers and using the Scopus database as the primary source. The second limitation is that only English language papers were included, and the third is thematic. Finally, the fourth limitation arises from the use of ACA, which has advantages over manual data analysis, but this is a review study rather than primary research.
The authors V.R., D.D., V.M. and M.M. contributed equally. All authors have read and agreed to the published version of the manuscript.
This research received no external funding.
The authors declare no conflict of interest.
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Enlarge this image.Figure 1. The number of papers (Y-axis) classified under ST by the WOS database available each year from 1990 to 2020 (X-axis). Source: Authors’ research.
Enlarge this image.Figure 3. Timeline of the development and importance of sustainable tourism from 1990 to 2020 (n = 5.080).
Themes and concepts in the journals in the years from 1990 to 2020.
| Theme | Hits | Concepts |
|---|---|---|
| Development | 14,100 | development, tourism, sustainable, local, economic, community, social, environment, rural, cultural, heritage, residents, framework, strategies, process, economy, experience |
| Management | 7257 | management, resources, protected, natural, region, conservation, planning, coastal, eco-tourism, people, marine, project |
| Change | 4763 | change, climate, services, ecological, system, ecosystem, human, changes, water, quality |
| Tourists | 4606 | tourists, growth, urban, countries, energy, food |
Source: Authors’ research.
Ranked concepts for categories overview.
| (a) | |||
|---|---|---|---|
| Concept | Rel. Freq. (%) | Strength (%) | Prominence |
| coastal | 18 | 9 | 4 |
| conservation | 16 | 7 | 3.7 |
| protected | 16 | 6 | 3 |
| management | 20 | 5 | 2.8 |
| planning | 11 | 5 | 2.7 |
| resources | 15 | 5 | 2.6 |
| local | 20 | 4 | 2.5 |
| community | 16 | 4 | 2.4 |
| tourism | 72 | 3 | 1.7 |
| economic | 13 | 3 | 1.5 |
| (b) | |||
| Concept | Rel. Freq. (%) | Strength (%) | Prominence |
| conservation | 6 | 23 | 1.3 |
| protected | 6 | 20 | 1.1 |
| resources | 7 | 20 | 1.1 |
| region | 6 | 20 | 1.1 |
| management | 7 | 17 | 1 |
| local | 8 | 16 | 0.9 |
| economic | 7 | 16 | 0.9 |
| community | 6 | 15 | 0.9 |
| tourism | 33 | 14 | 0.8 |
| sustainable | 6 | 10 | 0.6 |
| (c) | |||
| Concept | Rel. Freq. (%) | Strength (%) | Prominence |
| conservation | 4 | 29 | 1 |
| change | 4 | 25 | 0.9 |
| community | 5 | 22 | 0.8 |
| management | 6 | 22 | 0.8 |
| local | 6 | 21 | 0.8 |
| social | 5 | 21 | 0.8 |
| tourism | 31 | 21 | 0.7 |
| economic | 6 | 20 | 0.7 |
| resources | 4 | 20 | 0.7 |
| sustainable | 7 | 20 | 0.7 |
| (d) | |||
| Concept | Rel. Freq. (%) | Strength (%) | Prominence |
| growth | 6 | 68 | 1.3 |
| sustainable | 13 | 67 | 1.3 |
| social | 8 | 63 | 1.2 |
| rural | 6 | 61 | 1.2 |
| tourism | 49 | 61 | 1.2 |
| economic | 9 | 59 | 1.2 |
| community | 7 | 57 | 1.1 |
| local | 9 | 56 | 1.1 |
(a) Category: 1990–2000. Authors source. (b) Category: 2001–2010. (c) Category: 2011–2015. (d) Category: 2016–2020.
References
1. United Nations. Rio+20. Report on the UN Conference on Sustainable Development. Available online: http://www.uncsd2012.org/content/documents/814UNCSD%20REPORT%20final%20revs.pdf (accessed on 21 September 2021).
2. Robertson, V.J. UNESCO Statement for the World Summit on Ecotourism. Available online: http://www.unep.fr/shared/publications/cdrom/WEBx0139xPA/statmnts/pdfs/rouneef (accessed on 9 September 2021).
3. UNWTO—United Nations World Tourism Organisation. The Guidebook “Sustainable Tourism for Development” Brussels. Available online: http://icr.unwto.org/content/guidebook-sustainable-tourism-development (accessed on 25 September 2021).
4. Nathaniel, S.P.; Adedoyin, F.F. Tourism development, natural resource abundance, and environmental sustainability: Another look at the ten most visited destinations. J. Public Aff.; 2020; 2553. [DOI: https://dx.doi.org/10.1002/pa.2553]
5. Casagrandi, R.; Rinaldi, S. A Theoretical Approach to Tourism Sustainability. Conserv. Ecol.; 2002; 6, 13. [DOI: https://dx.doi.org/10.5751/ES-00384-060113]
6. Lee, T.H.; Jan, F.-H. Ecotourism Behavior of Nature-Based Tourists: An Integrative Framework. J. Travel Res.; 2018; 57, pp. 792-810. [DOI: https://dx.doi.org/10.1177/0047287517717350]
7. Wall, G. Is eco-tourism sustainable?. Environ. Manag.; 1997; 21, pp. 483-491. [DOI: https://dx.doi.org/10.1007/s002679900044]
8. Line, N.D.; Hanks, L.; Miao, L. Image matters: Incentivising green tourism behavior. J. Travel Res.; 2018; 57, pp. 296-309. [DOI: https://dx.doi.org/10.1177/0047287517697848]
9. Burrai, E.; Buda, D.-M.; Stanford, D. Rethinking the ideology of responsible tourism. J. Sustain. Tour.; 2019; 27, pp. 992-1007. [DOI: https://dx.doi.org/10.1080/09669582.2019.1578365]
10. Asadi, S.; Pourhashemi, S.O.; Nilashi, M.; Abdullah, R.; Samad, S.; Yadegaridehkordi, E.; Aljojo, N.; Razali, N.S. Investigating influence of green innovation on sustainability performance: A case on Malaysian hotel industry. J. Clean. Prod.; 2020; 258, 120860. [DOI: https://dx.doi.org/10.1016/j.jclepro.2020.120860]
11. Cheng, M.; Edwards, D. A comparative automated content analysis approach on the review of the sharing economy discourse in tourism and hospitality. Curr. Issues Tour.; 2019; 22, pp. 35-49. [DOI: https://dx.doi.org/10.1080/13683500.2017.1361908]
12. Rasoolimanesh, S.M.; Ramakrishna, S.; Hall, C.M.; Esfandiar, K.; Seyfi, S. A systematic scoping review of sustainable tourism indicators in relation to the sustainable development goals. J. Sustain. Tour.; 2020; pp. 1-21. [DOI: https://dx.doi.org/10.1080/09669582.2020.1775621]
13. Streimikiene, D.; Svagzdiene, B.; Jasinskas, E.; Simanavicius, A. Sustainable tourism development and competitiveness: The systematic literature review. Sustain. Dev.; 2021; 29, pp. 259-271. [DOI: https://dx.doi.org/10.1002/sd.2133]
14. León-Gómez, A.; Ruiz-Palomo, D.; Fernández-Gámez, M.A.; García-Revilla, M.R. Sustainable tourism development and economic growth: Bibliometric review and analysis. Sustainability; 2021; 13, 2270. [DOI: https://dx.doi.org/10.3390/su13042270]
15. Xu, F.; Nash, N.; Whitmarsh, L. Big data or small data? A methodological review of sustainable tourism. J. Sustain. Tour.; 2020; 28, pp. 144-163. [DOI: https://dx.doi.org/10.1080/09669582.2019.1631318]
16. Evangelista, P.; Santoro, L.; Thomas, A.A. Systematic literature review from 2000–2016. Sustainability; 2018; 10, 1627. [DOI: https://dx.doi.org/10.3390/su10051627]
17. Blei, D.M. Probabilistic topic models. Commun. ACM; 2012; 55, pp. 77-84. [DOI: https://dx.doi.org/10.1145/2133806.2133826]
18. Usai, A.; Pironti, M.; Mital, M.; Mejri, C.A. Knowledge discovery out of text data: A systematic review via text mining. J. Knowl. Manag.; 2018; 22, pp. 1471-1488. [DOI: https://dx.doi.org/10.1108/JKM-11-2017-0517]
19. Nunez-Mir, G.C.; Iannone, B.V., III; Pijanowski, B.C.; Kong, N.; Fei, S. Automated content analysis: Addressing the big literature challenge in ecology and evolution. Methods Ecol. Evol.; 2016; 7, pp. 1262-1272. [DOI: https://dx.doi.org/10.1111/2041-210X.12602]
20. Leximancer. Leximancer User Guide. 2020; Available online: https://info.leximancer.com/ (accessed on 2 September 2021).
21. United Nations Sustainable Development Goals Knowledge Platform. Available online: https://sustainabledevelopment.un.org/outcomedocuments/agenda21 (accessed on 27 October 2021).
22. Maikhuri, R.K.; Rana, U.; Rao, K.S.; Nautiyal, S.; Saxena, K.G. Promoting ecotourism in the buffer zone areas of Nanda Devi Biosphere Reserve: An option to resolve people—Policy conflict. Int. J. Sustain. Dev. World Ecol.; 2020; 7, pp. 333-342. [DOI: https://dx.doi.org/10.1080/13504500009470052]
23. Yu, D.W.; Hendrickson, T.; Castillo, A. Ecotourism and conservation in Amazonian Perú: Short-term and long-term challenges. Environ. Conserv.; 1997; 24, pp. 130-138. [DOI: https://dx.doi.org/10.1017/S0376892997000192]
24. Walpole, M.J.; Goodwin, H.J. Local economic impacts of dragon tourism in Indonesia. Ann. Tour. Res.; 2000; 27, pp. 559-576. [DOI: https://dx.doi.org/10.1016/S0160-7383(99)00088-2]
25. Baker, J.E. Development of a model system for touristic hunting revenue collection and allocation. Tour. Manag.; 1997; 18, pp. 273-286. [DOI: https://dx.doi.org/10.1016/S0261-5177(97)00016-2]
26. Wearing, S.; Wearing, M. Decommodifying Ecotourism: Rethinking global-local interactions with host Communities. Soc. Leis.; 1999; 22, pp. 39-70. [DOI: https://dx.doi.org/10.1080/07053436.1999.10715575]
27. Moscardo, G. Interpretation and sustainable tourism: Functions, examples and principles. J. Tour. Stud.; 1998; 9, 2.
28. Jurowski, C.; Olsen, M.D. Scanning the environment of tourism attractions: A content analysis approach. J. Travel Tour. Mark.; 1995; 4, pp. 71-96. [DOI: https://dx.doi.org/10.1300/J073v04n01_05]
29. Simpson, F.; Roberts, L. Help or Hindrance? Sustainable Approaches to Tourism Consultancy in Central and Eastern Europe. J. Sustain. Tour.; 2000; 8, pp. 491-509. [DOI: https://dx.doi.org/10.1080/09669580008667382]
30. Guthman, J. Representing Crisis: The Theory of Himalayan Environmental Degradation and the Project of Development in Post-Rana Nepal. Dev. Chang.; 1997; 28, pp. 45-69. [DOI: https://dx.doi.org/10.1111/1467-7660.00034]
31. Collins, A. Tourism development and natural capital. Ann. Tour. Res.; 1999; 26, pp. 98-109. [DOI: https://dx.doi.org/10.1016/S0160-7383(98)00059-0]
32. Welford, R.; Ytterhus, B. Conditions for the transformation of eco-tourism into sustainable tourism. Eur. Environ.; 1998; 8, pp. 193-201. [DOI: https://dx.doi.org/10.1002/(SICI)1099-0976(199811/12)8:6<193::AID-EET164>3.0.CO;2-4]
33. Ross, S.; Wall, G. Ecotourism: Towards congruence between theory and practice. Tour. Manag.; 1999; 20, pp. 123-132. [DOI: https://dx.doi.org/10.1016/S0261-5177(98)00098-3]
34. Juda, L. Considerations in Developing a Functional Approach to the Governance of Large Marine Ecosystems. Ocean Dev. Int. Law; 1999; 30, pp. 89-125. [DOI: https://dx.doi.org/10.1080/009083299276203]
35. Wescott, G. The development and initial implementation of Australia’s ‘integrated and comprehensive’ Oceans Policy. Ocean Coast. Manag.; 2000; 43, pp. 853-878. [DOI: https://dx.doi.org/10.1016/S0964-5691(00)00067-3]
36. Clark, J.R. Coastal zone management for the new century. Ocean Coast. Manag.; 1997; 37, pp. 191-216. [DOI: https://dx.doi.org/10.1016/S0964-5691(97)00052-5]
37. Kenchington, R.; Crawford, D. On the meaning of integration in coastal zone management. Ocean Coast. Manag.; 1993; 21, pp. 109-127. [DOI: https://dx.doi.org/10.1016/0964-5691(93)90022-Q]
38. Butler, R.W. Tourism, Environment, and Sustainable Development. Environ. Conserv.; 1991; 18, pp. 201-209. [DOI: https://dx.doi.org/10.1017/S0376892900022104]
39. Sinclair, M.T. Tourism and economic development: A survey. J. Dev. Stud.; 1998; 34, pp. 1-51. [DOI: https://dx.doi.org/10.1080/00220389808422535]
40. Hjalager, A.-M. Consumerism and Sustainable Tourism. J. Travel Tour. Mark.; 2000; 8, pp. 1-20. [DOI: https://dx.doi.org/10.1300/J073v08n03_01]
41. Klenosky, D.B. Nature-based tourists’ use of interpretive services: A means-end investigation. J. Tour. Stud.; 1998; 9, 26.
42. Von Frantzius, I. World Summit on Sustainable Development Johannesburg 2002: A Critical Analysis and Assessment of the Outcomes. Environ. Polit.; 2004; 13, pp. 467-473. [DOI: https://dx.doi.org/10.1080/09644010410001689214]
43. Castellani, V.; Sala, S. Sustainable performance index for tourism policy development. Tour. Manag.; 2010; 31, pp. 871-880. [DOI: https://dx.doi.org/10.1016/j.tourman.2009.10.001]
44. Framke, W. The Destination as a Concept: A Discussion of the Business-related Perspective versus the Socio-cultural Approach in Tourism Theory. Scand. J. Hosp. Tour.; 2002; 2, pp. 92-108. [DOI: https://dx.doi.org/10.1080/15022250216287]
45. De Carlo, M.; Dubini, P. Integrating heritage management and tourism at Italian cultural destinations. Int. J. Arts Manag.; 2010; 12, pp. 30-43.
46. Gössling, S. Sustainable Tourism Development in Developing Countries: Some Aspects of Energy Use. J. Sustain. Tour.; 2000; 8, pp. 410-425. [DOI: https://dx.doi.org/10.1080/09669580008667376]
47. Cawley, M.; Gillmor, D.A. Integrated rural tourism: Concepts and Practice. Ann. Tour. Res.; 2008; 35, pp. 316-337. [DOI: https://dx.doi.org/10.1016/j.annals.2007.07.011]
48. Garrod, B.; Wornell, R.; Youell, R. Re-conceptualising rural resources as countryside capital: The case of rural tourism. J. Rural Stud.; 2006; 22, pp. 117-128. [DOI: https://dx.doi.org/10.1016/j.jrurstud.2005.08.001]
49. Vellecco, I.; Mancino, A. Sustainability and tourism development in three Italian destinations: Stakeholders’ opinions and behaviours. Serv. Ind. J.; 2010; 30, pp. 2201-2223. [DOI: https://dx.doi.org/10.1080/02642060903287500]
50. Scheyvens, R.; Momsen, J.H. Tourism and Poverty Reduction: Issues for Small Island States. Tour. Geogr.; 2008; 10, pp. 22-41. [DOI: https://dx.doi.org/10.1080/14616680701825115]
51. Uitto, J.I. International Cooperation for Sustainable Coastal and Marine Management in East Asia. Geogr. Rev. Jpn.; 2003; 76, pp. 869-881. [DOI: https://dx.doi.org/10.4157/grj.76.12_869]
52. White, A.T.; Courtney, C.A.; Salamanca, A. Experience with Marine Protected Area Planning and Management in the Philippines. Coast. Manag.; 2002; 30, pp. 1-26. [DOI: https://dx.doi.org/10.1080/08920750252692599]
53. Glavovic, B.C.; Boonzaier, S. Confronting coastal poverty: Building sustainable coastal livelihoods in South Africa. Ocean Coast. Manag.; 2007; 50, pp. 1-23. [DOI: https://dx.doi.org/10.1016/j.ocecoaman.2006.07.001]
54. Nepal, S.K.; Chipeniuk, R. Mountain tourism: Toward a conceptual framework. Tour. Geogr.; 2005; 7, pp. 313-333. [DOI: https://dx.doi.org/10.1080/14616680500164849]
55. Pereira, E.; Queiroz, C.; Pereira, H.; Vicente, L. Ecosystem Services and Human Well-Being: A Participatory Study in a Mountain Community in Portugal. Ecol. Soc.; 2005; 10, 14. [DOI: https://dx.doi.org/10.5751/ES-01353-100214]
56. Bieger, T.; Wittmer, A. Air transport and tourism—Perspectives and challenges for destinations, airlines and governments. J. Air Transp. Manag.; 2006; 12, pp. 40-46. [DOI: https://dx.doi.org/10.1016/j.jairtraman.2005.09.007]
57. Khadaroo, J.; Seetanah, B. Transport infrastructure and tourism development. Ann. Tour. Res.; 2007; 34, pp. 1021-1032. [DOI: https://dx.doi.org/10.1016/j.annals.2007.05.010]
58. Porter, D.; Craig, D. The third way and the third world: Poverty reduction and social inclusion in the rise of ‘inclusive’ liberalism. Rev. Int. Polit. Econ.; 2004; 11, pp. 387-423. [DOI: https://dx.doi.org/10.1080/09692290420001672881]
59. Cascante, D.M. Beyond Growth: Reaching tourism-led development. Ann. Tour. Res.; 2010; 37, pp. 1141-1163. [DOI: https://dx.doi.org/10.1016/j.annals.2010.05.004]
60. Mbaiwa, J.E. The Socio-cultural Impacts of Tourism Development in the Okavango Delta, Botswana. J. Tour. Cult. Chang.; 2005; 2, pp. 163-185. [DOI: https://dx.doi.org/10.1080/14766820508668662]
61. Padilla, M.B.; Guilamo-Ramos, V.; Bouris, A.; Reyes, A.M. HIV/AIDS and Tourism in the Caribbean: An Ecological Systems Perspective. Am. J. Public Health; 2010; 100, pp. 70-77. [DOI: https://dx.doi.org/10.2105/AJPH.2009.161968]
62. Cabezas, A.L. Economies of Desire: Sex and Tourism in Cuba and the Dominican Republic; Temple University Press: Philadelphia, PA, USA, 2009.
63. Juvan, E.; Dolnicar, S. The attitude–behaviour gap in sustainable tourism. Ann. Tour. Res.; 2014; 48, pp. 76-95. [DOI: https://dx.doi.org/10.1016/j.annals.2014.05.012]
64. Carlisle, S.; Kunc, M.; Jones, E.; Tiffin, S. Supporting innovation for tourism development through multi-stakeholder approaches: Experiences from Africa. Tour. Manag.; 2013; 35, pp. 59-69. [DOI: https://dx.doi.org/10.1016/j.tourman.2012.05.010]
65. Minciu, R.; Pădurean, M.; Popescu, D.; Hornoiu, R. Demand for Vacations/Travel in Protected Areas–Dimension of Tourists’ Ecological Behavior. Amfit. Econ. J.; 2012; 14, pp. 99-113.
66. Ramos, A.M.; Prideaux, B. Indigenous ecotourism in the Mayan rainforest of Palenque: Empowerment issues in sustainable development. J. Sustain. Tour.; 2014; 22, pp. 461-479. [DOI: https://dx.doi.org/10.1080/09669582.2013.828730]
67. Romão, J.; Neuts, B.; Nijkamp, P.; Shikida, A. Determinants of trip choice, satisfaction and loyalty in an eco-tourism destination: A modelling study on the Shiretoko Peninsula, Japan. Ecol. Econ.; 2014; 107, pp. 195-205. [DOI: https://dx.doi.org/10.1016/j.ecolecon.2014.07.019]
68. Gössling, S.; Scott, D.; Hall, C.M.; Ceron, J.-P.; Dubois, G. Consumer behaviour and demand response of tourists to climate change. Ann. Tour. Res.; 2012; 39, pp. 36-58. [DOI: https://dx.doi.org/10.1016/j.annals.2011.11.002]
69. Chen, W.-J.; Liaw, S.-C. What is the Value of Eco-Tourism? An Evaluation of Forested Trails for Community Residents and Visitors. Tour. Econ.; 2012; 18, pp. 871-885. [DOI: https://dx.doi.org/10.5367/te.2012.0146]
70. Khakzad, S.; Pieters, M.; Van Balen, K. Coastal cultural heritage: A resource to be included in integrated coastal zone management. Ocean Coast. Manag.; 2015; 118, pp. 110-128. [DOI: https://dx.doi.org/10.1016/j.ocecoaman.2015.07.032]
71. Carneiro, M.J.; Lima, J.; Silva, A.L. Landscape and the rural tourism experience: Identifying key elements, addressing potential, and implications for the future. J. Sustain. Tour.; 2015; 23, pp. 1217-1235. [DOI: https://dx.doi.org/10.1080/09669582.2015.1037840]
72. Bohnet, I.C.; Konold, W. New approaches to support implementation of nature conservation, landscape management and cultural landscape development: Experiences from Germany’s southwest. Sustain. Sci.; 2015; 10, pp. 245-255. [DOI: https://dx.doi.org/10.1007/s11625-015-0290-z]
73. McAreavey, R.; McDonagh, J. Sustainable Rural Tourism: Lessons for Rural Development. Sociol. Rural.; 2011; 51, pp. 175-194. [DOI: https://dx.doi.org/10.1111/j.1467-9523.2010.00529.x]
74. McGehee, N.G.; Knollenberg, W.; Komorowski, A. The central role of leadership in rural tourism development: A theoretical framework and case studies. J. Sustain. Tour.; 2015; 23, pp. 1277-1297. [DOI: https://dx.doi.org/10.1080/09669582.2015.1019514]
75. Komppula, R. The role of individual entrepreneurs in the development of competitiveness for a rural tourism destination—A case study. Tour. Manag.; 2014; 40, pp. 361-371. [DOI: https://dx.doi.org/10.1016/j.tourman.2013.07.007]
76. Cazcarro, I.; Hoekstra, A.; Chóliz, J.S. The water footprint of tourism in Spain. Tour. Manag.; 2014; 40, pp. 90-101. [DOI: https://dx.doi.org/10.1016/j.tourman.2013.05.010]
77. Schmidt, L.; Gomes, C.; Guerreiro, S.; O’Riordan, T. Are we all on the same boat? The challenge of adaptation facing Portuguese coastal communities: Risk perception, trust-building and genuine participation. Land Use Policy; 2014; 38, pp. 355-365. [DOI: https://dx.doi.org/10.1016/j.landusepol.2013.11.008]
78. Semeoshenkova, V.; Newton, A. Overview of erosion and beach quality issues in three Southern European countries: Portugal, Spain and Italy. Ocean Coast. Manag.; 2015; 118, pp. 12-21. [DOI: https://dx.doi.org/10.1016/j.ocecoaman.2015.08.013]
79. Lucrezi, S.; Saayman, M.; Van der Merwe, P. Managing beaches and beachgoers: Lessons from and for the Blue Flag award. Tour. Manag.; 2015; 48, pp. 211-230. [DOI: https://dx.doi.org/10.1016/j.tourman.2014.11.010]
80. Coles, T.; Fenclova, E.; Dinan, C. Tourism and corporate social responsibility: A critical review and research agenda. Tour. Manag. Perspect.; 2013; 6, pp. 122-141. [DOI: https://dx.doi.org/10.1016/j.tmp.2013.02.001]
81. McCombes, L.; Vanclay, F.; Evers, Y. Putting social impact assessment to the test as a method for implementing responsible tourism practice. Environ. Impact Assess. Rev.; 2015; 55, pp. 156-168. [DOI: https://dx.doi.org/10.1016/j.eiar.2015.07.002]
82. Razumova, M.; Ibáñez, J.L.; Palmer, J.R.-M. Drivers of environmental innovation in Majorcan hotels. J. Sustain. Tour.; 2015; 23, pp. 1529-1549. [DOI: https://dx.doi.org/10.1080/09669582.2015.1062016]
83. Tugores, M.; García, D. The Impact of Innovation on Firms’ Performance: An Analysis of the Hotel Sector in Majorca. Tour. Econ.; 2015; 21, pp. 121-140. [DOI: https://dx.doi.org/10.5367/te.2014.0440]
84. Timms, B.F.; Conway, D. Slow Tourism at the Caribbean’s Geographical Margins. Tour. Geogr.; 2012; 14, pp. 396-418. [DOI: https://dx.doi.org/10.1080/14616688.2011.610112]
85. Özdemir, G.; Yilmaz, M.; Yalçin, M.; Alvarez, M.D. Stakeholders’ Perception of Istanbul’s Historical Peninsula as a Sustainable Destination. Tour. Plan. Dev.; 2015; 12, pp. 87-98. [DOI: https://dx.doi.org/10.1080/21568316.2014.960596]
86. United Nations. Transforming Our World. The 2030 Agenda for Sustainable Development. Available online: https://sustainabledevelopment.un.org/post2015/transformingourworld (accessed on 21 August 2021).
87. Swain, R.B.; Yang-Wallentin, F. Achieving sustainable development goals: Predicaments and strategies. Int. J. Sustain. Dev. World Ecol.; 2020; 27, pp. 96-106. [DOI: https://dx.doi.org/10.1080/13504509.2019.1692316]
88. Galli, A.; Đurović, G.; Hanscom, L.; Knežević, J. Think globally, act locally: Implementing the sustainable development goals in Montenegro. Environ. Sci. Policy; 2018; 84, pp. 159-169. [DOI: https://dx.doi.org/10.1016/j.envsci.2018.03.012]
89. Caust, J.; Vecco, M. Is UNESCO World Heritage recognition a blessing or burden? Evidence from developing Asian countries. J. Cult. Herit.; 2017; 27, pp. 1-9. [DOI: https://dx.doi.org/10.1016/j.culher.2017.02.004]
90. Lak, A.; Gheitasi, M.; Timothy, D.J. Urban regeneration through heritage tourism: Cultural policies and strategic management. J. Tour. Cult. Chang.; 2020; 18, pp. 386-403. [DOI: https://dx.doi.org/10.1080/14766825.2019.1668002]
91. Seyfi, S.; Hall, C.M.; Fagnoni, E. Managing World Heritage Site stakeholders: A grounded theory paradigm model approach. J. Herit. Tour.; 2019; 14, pp. 308-324. [DOI: https://dx.doi.org/10.1080/1743873X.2018.1527340]
92. Alonso, A.D.; Sakellarios, N.; Pritchard, M. The theory of planned behaviour in the context of cultural heritage tourism. J. Herit. Tour.; 2015; 10, pp. 399-416. [DOI: https://dx.doi.org/10.1080/1743873X.2015.1044992]
93. Tuomi, A.; Tussyadiah, I.; Ling, E.C.; Miller, G.; Lee, G. x = (tourism_work) y = (sdg8) while y = true: automate(x). Ann. Tour. Res.; 2020; 84, 102978. [DOI: https://dx.doi.org/10.1016/j.annals.2020.102978]
94. Movono, A.; Hughes, E. Tourism partnerships: Localizing the SDG agenda in Fiji. J. Sustain. Tour.; 2020; pp. 1-15. [DOI: https://dx.doi.org/10.1080/09669582.2020.1811291]
95. Xiao, W.; Mills, J.; Guidi, G.; Rodríguez-Gonzálvez, P.; Barsanti, S.G.; González-Aguilera, D. Geoinformatics for the conservation and promotion of cultural heritage in support of the UN Sustainable Development Goals. ISPRS J. Photogramm. Remote Sens.; 2018; 142, pp. 389-406. [DOI: https://dx.doi.org/10.1016/j.isprsjprs.2018.01.001]
96. Aquino, R.S.; Lück, M.; Schänzel, H.A. A conceptual framework of tourism social entrepreneurship for sustainable community development. J. Hosp. Tour. Manag.; 2018; 37, pp. 23-32. [DOI: https://dx.doi.org/10.1016/j.jhtm.2018.09.001]
97. Petrović, N.; Roblek, V.; Papachashvili, N. Decision support based on data mining for post COVID-19 tourism industry. Proceedings of the XV International SAUM Conference; Niš, Serbia, 9–10 September 2021.
98. Peterlin, J.; Meško, M.; Dimovski, V.; Roblek, V. Automated content analysis: The review of the big data systemic discourse in tourism and hospitality. Syst. Res. Behav. Sci.; 2021; 38, pp. 377-385. [DOI: https://dx.doi.org/10.1002/sres.2790]
99. Beck, J.; Rainoldi, M.; Egger, R. Virtual reality in tourism: A state-of-the-art review. Tour. Rev.; 2019; 74, pp. 586-612. [DOI: https://dx.doi.org/10.1108/TR-03-2017-0049]
100. Cranmer, E.E.; Dieck, M.C.T.; Fountoulaki, P. Exploring the value of augmented reality for tourism. Tour. Manag. Perspect.; 2020; 35, 100672. [DOI: https://dx.doi.org/10.1016/j.tmp.2020.100672]
101. Wang, W.; Kumar, N.; Chen, J.; Gong, Z.; Kong, X.; Wei, W.; Gao, H. Realizing the Potential of Internet of Things for Smart Tourism with 5G and AI. IEEE Netw.; 2020; 34, pp. 295-301. [DOI: https://dx.doi.org/10.1109/MNET.011.2000250]
102. Gupta, S.; Kumar, V.; Karam, E. New-age technologies-driven social innovation: What, how, where, and why?. Ind. Mark. Manag.; 2020; 89, pp. 499-516. [DOI: https://dx.doi.org/10.1016/j.indmarman.2019.09.009]
103. Carvajal, D.A.L.; Morita, M.M.; Bilmes, G.M. Virtual museums. Captured reality and 3D modeling. J. Cult. Herit.; 2020; 45, pp. 234-239. [DOI: https://dx.doi.org/10.1016/j.culher.2020.04.013]
104. Higgins-Desbiolles, F. The “war over tourism”: Challenges to sustainable tourism in the tourism academy after COVID-19. J. Sustain. Tour.; 2020; 29, pp. 551-569. [DOI: https://dx.doi.org/10.1080/09669582.2020.1803334]
105. Romagosa, F. The COVID-19 crisis: Opportunities for sustainable and proximity tourism. Tour. Geogr.; 2020; 22, pp. 690-694. [DOI: https://dx.doi.org/10.1080/14616688.2020.1763447]
106. Cunha, C.; Kastenholz, E.; Carneiro, M.J. Entrepreneurs in rural tourism: Do lifestyle motivations contribute to management practices that enhance sustainable entrepreneurial ecosystems?. J. Hosp. Tour. Manag.; 2020; 44, pp. 215-226. [DOI: https://dx.doi.org/10.1016/j.jhtm.2020.06.007]
107. Richards, G. Designing creative places: The role of creative tourism. Ann. Tour. Res.; 2020; 85, 102922. [DOI: https://dx.doi.org/10.1016/j.annals.2020.102922]
108. Roxas, F.M.Y.; Rivera, J.P.R.; Gutierrez, E.L.M. Mapping stakeholders’ roles in governing sustainable tourism destinations. J. Hosp. Tour. Manag.; 2020; 45, pp. 387-398. [DOI: https://dx.doi.org/10.1016/j.jhtm.2020.09.005]
109. Statista. International Tourism Receipts Worldwide from 2006 to 2020. Available online: https://www.statista.com/statistics/273123/total-international-tourism-receipts/ (accessed on 19 September 2021).
110. Kaushal, V.; Srivastava, S. Hospitality and tourism industry amid COVID-19 pandemic: Perspectives on challenges and learnings from India. Int. J. Hosp. Manag.; 2021; 92, 102707. [DOI: https://dx.doi.org/10.1016/j.ijhm.2020.102707] [PubMed: https://www.ncbi.nlm.nih.gov/pubmed/33024348]
111. Pearce, P.L. Tourists’ perception of time: Directions for design. Ann. Tour. Res.; 2020; 83, 102932. [DOI: https://dx.doi.org/10.1016/j.annals.2020.102932]
112. Sheth, J.N.; Sethia, N.K.; Srinivas, S. Mindful consumption: A customer-centric approach to sustainability. J. Acad. Mark. Sci.; 2011; 39, pp. 21-39. [DOI: https://dx.doi.org/10.1007/s11747-010-0216-3]
113. Stankov, U.; Filimonau, V.; Vujičić, M.D. A mindful shift: An opportunity for mindfulness-driven tourism in a post-pandemic world. Tour. Geogr.; 2020; 22, pp. 703-712. [DOI: https://dx.doi.org/10.1080/14616688.2020.1768432]
114. Wang, J.; Xie, C.; Huang, Q.; Morrison, A.M. Smart tourism destination experiences: The mediating impact of arousal levels. Tour. Manag. Perspect.; 2020; 35, 100707. [DOI: https://dx.doi.org/10.1016/j.tmp.2020.100707]
115. Johnson, K.R.; Park, S. Mindfulness training for tourism and hospitality frontline employees. Ind. Commer. Train.; 2020; 52, pp. 185-193. [DOI: https://dx.doi.org/10.1108/ICT-10-2019-0095]
116. Mohanty, P.; Hassan, A.; Ekis, E. Augmented reality for relaunching tourism post-COVID-19: Socially distant, virtually connected. Worldw. Hosp. Tour. Themes; 2020; 12, pp. 753-760. [DOI: https://dx.doi.org/10.1108/WHATT-07-2020-0073]
117. Petrović, N.; Tošić, M.; Nejković, V. AR-enabled mobile apps for robot coordination. Proceedings of the 7th Conference with International Participation Knowledge Management and Informatics; Vrnjačka Banja, Serbia, 2–4 June 2021.
118. Petrović, N.; Roblek, V.; Khokhobaia, M.; Gagnidze, I. AR-enabled mobile apps to support post COVID-19 tourism. Proceedings of the 15th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS); Niš, Serbia, 20–22 October 2021.
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.
Details
; Drpić, Danijel 2 ; Meško, Maja 3
; Milojica, Vedran 4 1 Faculty of Organisation Studies in Novo Mesto, 8000 Novo Mesto, Slovenia
2 Sustainable Agritourism, Polytechnic of Rijeka, 51000 Rijeka, Croatia;
3 Faculty of Organizational Sciences, University of Maribor, 4000 Kranj, Slovenia;
4 PAR University College Rijeka, 51000 Rijeka, Croatia;