Abramova T.F., Nikitina T.M., Polfuntikova A.V., and Yakutovich N.M. 2024. “Relationship of Biological and Pedagogical Aspects in children’s Early Sports Training”. Theory and Practice of Physical Culture, no. 7 (August):9-12. http://tpf1610220.nichost.ru/index.php/TPPC/article/view/1062.