[1]
N. POLKA, S. GOZAK, and О. ЄЛІЗАРОВА, “Optimization of physical training at secondary educational institutions”, Environment & Health, vol. 65, no. 2, p. 12, Apr. 2013, Accessed: Aug. 26, 2026. [Online]. Available: https://dovkil-zdorov.kiev.ua/journal/article/view/757