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