Iliev, I.     Comparison of conditioning abilities and technical skills between students practicing basketball during sports classes at the University of National and World Economy - Sofia and the University of Economics - Varna [Текст] / I. Iliev // 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. 233-236.