Ren, Yuanchun     Effects of Different Physical Activities on Children's Development of Gross Motor and Attention Ability [Текст] / Yuanchun Ren, Fang Wang, Jia. Cheng // 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. 28-29.