Lutkov, V. ., L. . Miller, G. . Smirnov, and D. . Shadrin. “METHOD OF FUNCTIONAL EVALUATION OF ADAPTATION OF VOLLEYBALL PLAYERS IN MICROCYCLES OF SPORTS TRAINING”. Theory and Practice of Physical Culture, no. 9, Nov. 2022, pp. 40-44, http://tpfk.ru/index.php/TPPC/article/view/389.