Hussein , Osama, Zahra Ahmed, and Abbas Azab. “Design of Composite Attention Test According to Optimal Accuracy Zones for Crushing Players (16-18 Years) in Volleyball”. Journal of Physical Education 37, no. 1 (March 28, 2025): 67–83. Accessed June 24, 2026. https://jcope.uobaghdad.edu.iq/index.php/jcope/article/view/2178.