“The Effect of Competitive Exercises With Numerical Deficiency on the Psychological Toughness and Handling and Shooting Skills of the Diyala Education Handball Team”. Sport culture 16, no. 1 (June 30, 2025): 374–389. Accessed August 8, 2026. http://jsc.tu.edu.iq/index.php/jsc/article/view/67.