1. Department of Business and Tourism Management, Izmail State University of Humanities, 12 Repina Str., 68601 Izmail, Ukraine
2. Research Centre for Industrial Problems of Development, National Academy of Sciences of Ukraine, 1a Inzhenernyi Ln., 61166 Kharkiv, Ukraine
3. Ionian Department of Law, Economics and Environment, University of Bari Aldo Moro, Via Duomo 259, 74100 Taranto, Italy
4. Igor Sikorsky Kyiv Polytechnic Institute, National Technical University of Ukraine, 37 Prosp. Peremohy, 03056 Kyiv, Ukraine
5. Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, 7A Wybickiego Street, 31-261 Kraków, Poland