Šimunič, Bostjan, Tadeja Volmut, Saša Pišot, Matej Plevnik, Urška Čeklić, Nika Pegan, Petra Dolenc, Iztok Retar, and Katja Koren. 2016. “RECOMMENDATIONS FOR ACHIEVING MEDIUM- AND HIGH-INTENSITY PHYSICAL SPORT ACTIVITY IN PHYSICAL EDUCATION TO IMPROVE THE HEALTH AND LEARNING OF CHILDREN AND ADOLESCENTS”. Annales Kinesiologiae 6 (2):137-48. https://ojs.zrs-kp.si/index.php/AK/article/view/107.