Ghanim Thunoon, Waleed. “Analytical Study of Some Kinematics Variables of Straight (Radial) Spike from Rare Region and Its Relation With Accuracy in Volleyball”. Al-Rafidain Journal For Sport Sciences 14, no. 49 (September 1, 2008): 99–127. Accessed October 3, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50269.