Kaupuzs, Aivars, and Inga Liepina. “FACTORS AFFECTING LEVELS OF PHYSICAL ACTIVITY IN SCHOOL ENVIRONMENT”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 4 (May 25, 2018): 85–98. Accessed November 24, 2024. https://journals.rta.lv/index.php/SIE/article/view/3410.