K. Asmer M, محمد. The effect of using learning program according to the changing of scheduling practice (massed-distributed) in learning front hand spring skill on vault apparatus in Gymnastic. RJSS [Internet]. 2013 Jan. 1 [cited 2025 Sep. 23];19(61):101-23. Available from: https://csmj.uomosul.edu.iq/index.php/rjss/article/view/36298