Sergei Volkov Analysis of trends in the Russian tourism industry development // Journal of Economics, Entrepreneurship and Law. — 2014. — Vol. 4. — № 3. — p. 14-23. — doi: 10.18334/epp.4.3.408
Sergei Volkov Analysis of trends in the Russian tourism industry development // Journal of Economics, Entrepreneurship and Law. — 2014. — Vol. 4. — № 2. — p. 47-57. — doi: 10.18334/epp.4.2.405