Gretsov, A. ., Y. . Pezhemskaya, N. . Somova, and . E. . Laktionova. “Competitive Progress Related Psychological Aspects of Trainer-Trainee Relationship”. Theory and Practice of Physical Culture, no. 3, Apr. 2022, pp. 43-45, http://tpfk.ru/index.php/TPPC/article/view/165.