Yuri Ya. Lobanov, E. G. S., Smirnova, Y. V., Kuz’mina, S. V. and Olga N. Fedorova, M. A. S. (2019) “Training specialists in physical education in the system of additional education”, Opción, 350, pp. 591-616. Available at: https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/24054 (Accessed: 30October2025).