Казанцева [Kazantseva A.] А. В. Individual approach and differentiation as the main organizational principles of physical education of children with poor health. Slobozhanskyi Herald of Science and Sport, [S. l.], n. 4(31), p. 7–11, 2012. Disponível em: https://journals.uran.ua/index.php/1991-0177/article/view/21903. Acesso em: 23 dec. 2024.