Yahya, Zuhair, زهير, Khalid A. Al-Khateeb, and خالد. “Attention Concentration and Perception (senso-motor),and Its Relationship With Long "serve Accuracy in Volleyball”. Al-Rafidain Journal For Sport Sciences (RJSS) 12, no. 41 (June 25, 2025): 60–78. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/rjss/article/view/35649.