Galiullina, S. ., O. . Kogan, D. . Gerasimova, and E. . Safina. “A Comparative Evaluation of the Psychophysiological State of Trainers”. Theory and Practice of Physical Culture, no. 4, May 2026, pp. 39-41, http://tpfk.ru/index.php/TPPC/article/view/1643.