Фаворитов (Volodymyr Favoritоv) В. М., and Сілявіна (Kateryna Siliavina) К. А. “Features and Performance Techniques Aiming Flexibility of Young Gymnasts 6-7 Years”. Slobozhanskyi Herald of Science and Sport, no. 2(40), Apr. 2014, pp. 121-4, doi:10.15391/snsv.2014-2.024.