Yahya, Z., زهير, A. Al-Khateeb, K. and خالد 2025. Attention concentration and perception (senso-motor),and its relationship with long "serve accuracy in volleyball. Al-Rafidain Journal For Sport Sciences (RJSS). 12, 41 (Jun. 2025), 60–78. DOI:https://doi.org/10.33899/rajsport.2006.6159.