Nagham Hatem Hameed, Haider Faiq Al-Shamaa, and Firas Haider, “Preparing movement exercises using a proposed laser device on the heel of the foot to learn and develop the speed of rotation and accomplish to the discus throw for youth U 20”, ms, vol. 23, no. 1, pp. 0123–0133, Mar. 2024, doi: 10.54702/mp2dfy77.