Lilic, L.     Examination of effects of developmental gymnastics on flexibility of 3th & 4th grade girls of elementary schools [Текст] / L. Lilic, D. Aleksic, S. Stankovic та ін. // 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. 305-307.