YEFREMENKO, A. . Directions for improving the training process of young tennis players. Sports games, [S. l.], n. 4(22), p. 45–54, 2023. DOI: 10.15391/si.2021-4.04. Disponível em: https://journals.uran.ua/sports_games/article/view/281610. Acesso em: 17 jul. 2024.