1.
Ibrahim I, Abd-Ali R. The Effect of Special Exercises On Learning the knuckleball kick Skill According to Speed and Spin of Smart Ball for Youth Football Players. jope [Internet]. 2016 Dec. 28 [cited 2026 Jul. 5];28(4.1):97-116. Available from: https://www.jcope.uobaghdad.edu.iq/index.php/jcope/article/view/434