Сергієнко Леонід Прокопович (Leonid S. Theoretical and Practical problems of modern stage of the development in children’s sport. Slobozhanskyi Herald of Science and Sport, [S. l.], n. 4(42), p. 54–64, 2014. DOI: 10.15391/snsv.2014-4.011. Disponível em: https://journals.uran.ua/index.php/1991-0177/article/view/26730. Acesso em: 27 apr. 2024.