ROSTOKA, Andriy. Formation of 11-12-years-old children’s relations in the process of physical training. Journal of Education, Health and Sport, [S. l.], v. 7, n. 4, p. 90–99, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/4317. Acesso em: 27 dec. 2025.