Milashechkina V.V., Sazonova M.A., Gernet I.N., and Trotsenko N.N. “Increased Anxiety in High-Class Young Athletes in Complex Sports Disciplines”. Theory and Practice of Physical Culture, no. 4, June 2025, pp. 56-58, http://www.tpfk.ru/index.php/TPPC/article/view/1325.