Khudolii, Oleg, Pavol Bartík, Dmytro Ivanov, and Andrii Bezzub. “Didactics: Peculiarities of Motor Skills Development in Boys Aged 14-15”. Teorìâ ta Metodika Fìzičnogo Vihovannâ 21, no. 4 (December 25, 2021): 381-388. Accessed January 19, 2022. https://tmfv.com.ua/journal/article/view/1614.