A. jasem, Maan. “The Effect of Using the System Delorm Weightlifting Exercises in Aspects of Muscle Strength and Some Basic Skills of Volleyball”. Al-Rafidain Journal For Sport Sciences 18, no. 58 (June 1, 2012): 188–212. Accessed October 2, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50424.