Antala, Branislav, Dorosova Sona, and Sedlacek Jaromir. “THE RELATIONSHIP OF HIGHER AND LOWER PHYSICAL FITNESS LEVEL PUPILS TOWARDS SCHOOL PHYSICAL EDUCATION”. Fiep Bulletin - online 77, no. 2-3 (April 18, 2012). Accessed May 18, 2024. https://www.fiepbulletin.net/fiepbulletin/article/view/2591.