Dougblay, A.D., E.A. Lubyshev, A.V. Titovsky, and A.A. Krasilnikov. “Limiting Factors of Investment Activity of the Sports Industry on the Example of International Football Competitions in Russia”. Theory and Practice of Physical Culture, no. 4 (April 27, 2023). Accessed February 2, 2025. http://tpf1610220.nichost.ru/index.php/TPPC/article/view/547.