Леонов [Yaroslav Leonov] Я. В.; Васильєв [Valeriy Vasiliev] В. В. Social and market conditions the development of physical culture and sport. Slobozhanskyi Herald of Science and Sport, [S. l.], n. 5(38), p. 151–154, 2013. Disponível em: https://journals.uran.ua/index.php/1991-0177/article/view/20601. Acesso em: 3 may. 2024.