Makhmutova, R.K., A.E. Prichinin, and A.A. Baranov. “Mental Health Protecting Recreational Physical Education Model for 40-50-Plus Year-Olds”. Theory and Practice of Physical Culture, no. 11 (November 1, 2021): 100–102. Accessed November 22, 2024. http://tpfk.ru/index.php/TPPC/article/view/56.