Y. Sleeman, Sleeman, سليمان, Khalid A. Jassim, خالد, Hayfa A. AL-Sawaf, and هيفاء. “The Effective Atomic Number of Tissue Equivalent Materials”. Rafidain Journal of Science 16, no. 4 (June 24, 2025): 22–27. Accessed August 16, 2025. https://ojs.uomosul.edu.iq/index.php/rsci/article/view/12048.