فرحان حيدر محمد علي, and المؤمن أ . د حسام سعيد. 2025. “The Effect of an E-Learning Program Supported by Expert Systems on Cognitive Flexibility and Learning Some Basic Football Skills for Students”. Wasit Journal of Sports Sciences 23 (1): 775-89. https://doi.org/10.31185/wjoss.846.