Топорков Олександр Миколайович (Alexander T. Physical training of 30–40 years old tourists skiers to ski sports hiking. Slobozhanskyi Herald of Science and Sport, [S. l.], n. 1(45), p. 134–139, 2015. DOI: 10.15391/snsv.2015-1.024. Disponível em: https://journals.uran.ua/index.php/1991-0177/article/view/38478. Acesso em: 6 may. 2024.