Толчєва Ганна Вікторівна (Ganna T. “Improving the Performance of Flexibility and Coordination Abilities University Girls-Students in the Process of Hatha-Yoga Classes During the University Year”. Slobozhanskyi Herald of Science and Sport, no. 1(45), Feb. 2015, pp. 129–133, doi:10.15391/snsv.2015-1.023.