Андрєєва, О. В., and А. В. Гакман. 2011. “Gakman A. Technology of Recreational and Health Activities in the Summer Camp Outwork”. Slobozhanskyi Herald of Science and Sport, no. 4(27) (December):216-20. https://journals.uran.ua/index.php/1991-0177/article/view/29223.