Pertov, P. K.     Multimedia training program according to the rules and refereeing of competitions on sports aerobics [Текст] / P.K. Pertov, E.R. Akhmedzyanov, I.A. Tatarskikh // Olympic Sports and Sport for All. Sport, Stress, Adaptation : proceeding book of XVI International Scientific Congress and VI International Scientific Congress (17-19 May 2012 ) : extra issue of Sport and science / ed. staff: P. Gashev, D. Dasheva, S. Videnova ; National Sport Academy "Vassil Leski". — Sofia, 2012. — P. 54-57.