MARKOVIČ, Roman, Peter ŽIŠKA, and Jaromír ŠIMONEK. “PHYSICAL ACTIVITY IN THE TIME OF COVID-19 PANDEMIC”. Studia Universitatis Babeş-Bolyai Educatio Artis Gymnasticae 66, no. 2 (June 30, 2021): 19–28. Accessed July 16, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbeducatio/article/view/493.