N. Al-Shammary, Rawaa, and روعة. “A Simple Mathematical Model to Calculate Dose Distribution of the Co-60 Beam”. Rafidain Journal of Science 19, no. 5 (June 24, 2025): 69–77. Accessed August 10, 2025. https://ojs.uomosul.edu.iq/index.php/rsci/article/view/12107.