Yousif , Mohammed Adel, and Alaa Muhsun Yasir. “The Relationship Between Some Kinematical Variables and Accuracy of the Spike in Volleyball for Ages (14–16)”. Journal of Physical Education 38, no. 1 (March 27, 2026): 1827–1834. Accessed June 27, 2026. https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/2282.