KALININA, E. A. Formation of the theoretical foundations of physical education in the second half of XIX century − early XX century. Pedagogika, [S. l.], v. 89, n. 11, p. 98–104, 2025. Disponível em: https://ojs.owebs.ru/pedagogika/article/view/30502. Acesso em: 8 nov. 2026.