Osipov, Aleksander Yu., Tatyana I. Ratmanskaya, Elena A. Zemba, Vladimir Potop, Mikhail D. Kudryavtsev, and Roman S. Nagovitsyn. “The Impact of the Universities Closure on Physical Activity and Academic Performance in Physical Education in University Students During the COVID-19 Pandemic”. Physical Education of Students 25, no. 1 (February 26, 2021): 20–27. Accessed March 30, 2023. https://sportedu.org.ua/index.php/PES/article/view/1315.