Ciematnieks, Uģis, and Beāte Streiķe. “PHYSICAL CONDITIONING OF TEENAGERS IN DIFFERENT KIND OF SPORTS”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 6 (May 20, 2020): 142–149. Accessed April 27, 2024. https://journals.rta.lv/index.php/SIE/article/view/5062.