Maksimov D, Anoshin A, Kotlyachkova N, Merzlyakova A. Popular physical education and sports in the volga federal district: progress analysis . TPPC [Internet]. 2022 Jan. 3 [cited 2024 May 17];(11):36-8. Available from: http://tpfk.ru/index.php/TPPC/article/view/42