Ryepko, Olena, Yevgen Tymko, and Oksana Tomilina. “The Use of ABS Strength Fitness in the Training Process of Football Players Aged 11-12”. Sports games, no. 2(20) (July 18, 2023): 92–99. Accessed July 17, 2024. https://journals.uran.ua/sports_games/article/view/284504.