Popova, A.I., A.E. Ardashev, G.Y. Prokopenko, and E.D. Klimov. “Coordination Skills to Excell Ski Jumping Technical Skills”. Theory and Practice of Physical Culture, no. 11 (January 3, 2022): 9–11. Accessed May 3, 2024. http://tpfk.ru/index.php/TPPC/article/view/29.