Basma Naeem Muhsin, Hanan Adnan Aboub, and Naima Zaidan Khalaf. 2019. “The Contribution of Physical and Skill Self-Assessment in Strictly Defensive Skills Performance for the Players of Volleyball”. Modern Sport 18 (3): 429-42. https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/1513.