Bolgova, Viktoriya V., Sergey A. Makushkin, Elena V. Povorina, Elena V. Duplij, and Tatiana S. Demchenko. 2016. “The Innovative Control Management of Travel Companies”. International Review of Management and Marketing 6 (6S):79-84. https://mail.econjournals.com/index.php/irmm/article/view/2926.