Shynkaruk, O.     Factors Affecting the Synchronous Performance of Movements in Group Exercises of Rhythmic Gymnastics [Текст] / O. Shynkaruk, А. Topol // Olympic sport and sport for all : proceedings of 17th International scientific congress ( Beijing, China, 2nd-6th, June, 2013) / International Association of Universities of Physical Culture and Sport, Capital University of Physical Education and Sports. — Beijing, 2013. — P. 269.