Ahmad Hamza, Enam. “A Comparative Study of the Creatine Kinase Activity in Human Seminal Fluid and Its Relation With Fertility”. Journal of Education and Science 26, no. 4 (October 1, 2013): 103–110. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41720.