Fedyaev N.A., Makarova E.V., Melentyev A.N., and Tsagolova N.G. “Essentials for Mutual Symmetrical and Asymmetrical Positions of Wrestlers”. Theory and Practice of Physical Culture, no. 10, Dec. 2024, pp. 3-5, http://tpfk.ru/index.php/TPPC/article/view/1130.