1. Geographical Institute “Jovan Cvijić”, Serbian Academy of Sciences and Arts, 11000 Belgrade, Serbia
2. Faculty of Hotel Management and Tourism, University of Kragujevac, 36210 Vrnjačka Banja, Serbia
3. Faculty of Management, University of Tehran, Tehran 1411713114, Iran
4. Faculty of Tourism and Hotel Management, University of Business Studies, 78000 Banja Luka, Bosnia and Herzegovina
5. Faculty of Economics, University of Kragujevac, 34000 Kragujevac, Serbia
6. Faculty of Organizational Studies EDUKA, University Business Academy, 11000 Belgrade, Serbia
7. Faculty of Tourism and Hospitality, University of Montenegro, 85330 Kotor, Montenegro
8. Faculty of Civil Engineering, University Union—Nikola Tesla, 11000 Belgrade, Serbia
9. Faculty of Entrepreneurial Business and Real Estate Management, University Union—Nikola Tesla, 11000 Belgrade, Serbia