Zilberstein O, Kotov V, Shklyar T, Avtonomova S. Analysis of the main economic indicators dynamics for the activities in the field of physical fitness and sports in the Southern Federal District of the Russian Federation in 2005-2017. Amazonia Investiga [Internet]. 27Dec.2018 [cited 16May2024];7(17):676-85. Available from: https://www.amazoniainvestiga.info/index.php/amazonia/article/view/783