Мулик [V’yacheslav Mulik] В. В., & Перепелиця [Pavlo Perepelica] П. Є. (2013). Experimental methods increases level technique and tactical to preparedness footballers middle school age. Slobozhanskyi Herald of Science and Sport, (3(36), 44–48. Retrieved from https://journals.uran.ua/index.php/1991-0177/article/view/20473