Клюс [Elena Klyus] О. А. The dynamics of task performance among boys during their second year of studying at educational establishment. Slobozhanskyi Herald of Science and Sport, [S. l.], n. 5(38), p. 132–140, 2013. Disponível em: https://journals.uran.ua/index.php/1991-0177/article/view/20593. Acesso em: 17 aug. 2024.