Левченко Валерій Анатолійович (Valeriy Levchenko). “Participation of Steroid Hormones in Providing Physical Activity in Young People With Varying Degrees of Physical Fitness”. Slobozhanskyi Herald of Science and Sport, no. 5(43) (October 31, 2014): 25–28. Accessed May 3, 2024. https://journals.uran.ua/index.php/1991-0177/article/view/28693.