USAKOVSKY, Y.; BOVA, N. Comparative analysis of motive activity with a ball and without in training of different playing lines of young footballers aged 11-15 years. Physical Education of Students, [S. l.], v. 17, n. 1, p. 74–77, 2013. DOI: 10.6084/m9.figshare.156362. Disponível em: https://sportedu.org.ua/index.php/PES/article/view/372. Acesso em: 27 jul. 2026.