Nykytenko, A.O., S.A. Nikitenko, V.V. Busol, A.A. Nykytenko, M.R. Velychkovych, and V.P. Martciv. 2013. “Intercommunications of Indexes of Speed and Power Qualities of Sportsmen Single Combat on the Stage of the Specialized Base Preparation”. Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports 17 (1):49-55. https://sportpedagogy.org.ua/index.php/PPS/article/view/611.