SVIETLOVA, O. D. Group filling for physical culture lessons at different levels of schoolchildren’s morbidity. Cherkasy University Bulletin: Biological Sciences Series, [S. l.], n. 1, p. 85–90, 2019. Disponível em: https://bio-ejournal.cdu.edu.ua/article/view/3368. Acesso em: 12 may. 2026.