Vetitnev, Alexandr, Nadezhda Bobina, and Olga Zelenskaya. “Analysis of tourists’ Expenditures at the 2014 Sochi Olympic Games”. International Review of Management and Marketing 6, no. 2 (April 17, 2016): 227–232. Accessed April 28, 2025. https://econjournals.com./index.php/irmm/article/view/1976.