Derkacheva, L. N., Kosolapov, A. B., Galenko, E. V., & Makartseva, E. V. (2016). Marine Tourism in the South East of Russia: The State and Development Tendencies. International Review of Management and Marketing, 6(4), 673–676. Retrieved from https://econjournals.net.tr/index.php/irmm/article/view/2865