Dubrovinskiy, S. ., and A. . Batalov. “Competition System of Elite Cross-Country Sprint Skiers During the Preparation for and Participation in the XXIV Olympic Winter Games 2022 in Beijing (PRC)”. Theory and Practice of Physical Culture, no. 4, May 2026, pp. 87-89, http://tpfk.ru/index.php/TPPC/article/view/1658.