Shkurkin, Dmitry V., Olga V. Sogacheva, Elena S. Logvencheva, and Marina N. Khramova. 2016. “Modernization of the Sphere of Tourist and Hospitality Industry of the South of Russia As a Growth Factor of Socio-Economic Stability of the Region”. International Journal of Economics and Financial Issues 6 (1S):101-6. https://mail.econjournals.com/index.php/ijefi/article/view/2361.