ANTIPIN N, BORUN E, LUTKOVSKAYA O. VARIABLE APPROACH IN STANDARD TRAINING SESSIONS OF ATHLETES 10–12 YEARS OLD IN THE CONDITIONS OF A SPORTS CLASS. Вестник Полоцкого государственного университета. Серия E. Педагогические науки [Internet]. 2021Jun.1 [cited 2025Apr.4];(7):60-3. Available from: https://journals.psu.by/pedagogical/article/view/831