Феуерман [Vasily Feuerman] В. В., & Шевченко [Alla Shevchenko] Г. М. (2013). The moral principles of sport in the XXI century. Slobozhanskyi Herald of Science and Sport, (5(38), 257–260. Retrieved from https://journals.uran.ua/index.php/1991-0177/article/view/20719