Smirnova, Y., E. . Saykina, V. . Smirnov, and P. . Stankevich. “RuThe Use of Crossfit in the System of Physical Training of Special Unit Personnel”. Theory and Practice of Physical Culture, no. 7, Sept. 2026, pp. 47-49, http://www.tpfk.ru/index.php/TPPC/article/view/1730.