Yefremenko, Andrii, Svetlana Pyatisotskaya, Viktor Pavlenko, Tetiana Shutieieva, Yaroslav Kraynik, and Olena Nasonkina. “Effectiveness of Physical Training of Tennis Players for Competitions Using Elements of Athletics”. Slobozhanskyi Herald of Science and Sport, no. 4(84) (October 22, 2021): 5–10. Accessed May 2, 2024. https://journals.uran.ua/index.php/1991-0177/article/view/242014.