1. Southern Federal University, Higher School of Business, Department of Tourism, Rostov-na-Donu, Russia
2. Southern Federal University, Higher School of Business, Department of Tourism, Rostov-na-Donu, Russia + International Agency for Minerals Policy (‘MinPol’), Austria
3. International Agency for Minerals Policy (‘MinPol’), Austria + CNR-IRSA, National Research Council, Water Research Institute, Bari, Italy
4. CNR-IRPI, National Research Council, Research Institute for Hydrological Protection, Rende, Italy
5. University of Cincinnati, Department of Geology, Cincinnati, USA + University of Cincinnati, Department of Anthropology, Cincinnati, USA
6. Suffolk County Department of Planning, Veterans Memorial Highway, Hauppauge, NY, USA
7. Camp for Practice and Educational Tourism ‘Belaja Retchka’, Southern Federal University, Nikel’ (Dakhovskaja Post Office), Majkop District, Republic of Adygeja, Russia