Lyubetsky N.P., Agafonov S.V., Fomenko V.D., and Chub S.A. “The Results of a Pedagogical Experiment Aimed at Improving Overall Endurance in Football During the Training Period”. Theory and Practice of Physical Culture, no. 6 (August 22, 2025): 11–13. Accessed December 5, 2025. http://www.tpfk.ru/index.php/TPPC/article/view/1374.