Бала Тетяна Михайлівна (Tetyana B. “Change in the Level of Strength and Endurance Development of 5-6 Grades Pupils under Cheerleading Exercises Influence”. Slobozhanskyi Herald of Science and Sport, no. 3(47), June 2015, pp. 18-23, doi:10.15391/snsv.2015-3.003.