1. Department of Tourism, Varna University of Management, Varna, Bulgaria
2. Zangador Research Institute, Varna, Bulgaria
3. Faculty of Tourism, Mardin Artuklu University, Mardin, Turkey
4. Tourism Development, the Research Unit of Governance, Competitiveness and Public Policies (GOVCOPP)-University of Aveiro, Aveiro, Portugal
5. International Hospitality Management Graduate, Varna University of Management, Varna, Bulgaria