Y. Mahmoud, Mahmoud, and محمود. “Reasons Appearances of Riot-Football Field Periodic in Sudan Universities”. Al-Rafidain Journal For Sport Sciences (RJSS) 18, no. 58 (June 24, 2025): 213–227. Accessed August 4, 2025. https://ojs.uomosul.edu.iq/index.php/rjss/article/view/10966.