Петренко [Sergiy Petrenko] Сергій Іванович. “Physical Capacity and Functional Resources of the Respiratory System of Young Footballers With Various Biological Development”. Slobozhanskyi Herald of Science and Sport, no. 2(35) (April 30, 2013): 120–123. Accessed August 17, 2024. https://journals.uran.ua/index.php/1991-0177/article/view/18483.