Novikova, N.B., I.G. Ivanova, N.B. Kotelevskaya, and A.I. Golovachev. “Competitive Analysis of Performance of Strongest Junior and Senior Cross-Country Skiers”. Theory and Practice of Physical Culture, no. 3 (April 5, 2022): 19–21. Accessed November 25, 2024. http://tpfk.ru/index.php/TPPC/article/view/157.