Dr. Najah Mahdi Shalash, D. M. A. J. S. Q. S. A. . “Effect of the Opposite Hierarchical Training Method to Developing Explosive Power, Which Is Characterized by Speed and Some Functional Variables for Basketball Players”. Annals of the Romanian Society for Cell Biology, vol. 25, no. 6, May 2021, pp. 730-8, https://www.annalsofrscb.ro/index.php/journal/article/view/5488.