Waedala Ali, Walled, and Ehsan Ameen. “Effect of Using Some Assistant Instrument in Order to Get the Art of Accuracy and Performance of Some Basic Skills in Tennis”. Al-Rafidain Journal For Sport Sciences 12, no. 42 (December 1, 2006): 294–317. Accessed October 3, 2025. https://rsprs.uomosul.edu.iq/index.php/rsprs/article/view/50313.