Пилипко, Ольга, and Аліна Пилипко. “An Interconnection Between Morphological and Functional Development of Highly Trained Swimmers and a Result of Overcoming Different Length Distances by Means of the Butterfly Stroke”. Slobozhanskyi Herald of Science and Sport, no. 2(58) (April 30, 2017): 67–72. Accessed November 23, 2024. https://journals.uran.ua/index.php/1991-0177/article/view/99866.