Early Specialization and Substantiation of Age for Rhythmic Gymnastics Classes in Context of the Modern Sport. Fiz. vihov. sport kul’t. zdor. suchas. susp. [Internet]. 2021 Sep. 30 [cited 2024 May 5];(3(55):90-102. Available from: https://sport.vnu.edu.ua/index.php/sport/article/view/2345