H. Majeed, Abdul Rahman, and Enaam F. Adhab. “On Maps Of Period 2 On Prime Near – Rings”. Journal of Al-Qadisiyah for Computer Science and Mathematics 7, no. 2 (August 9, 2017): 72–79. Accessed November 15, 2024. https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/66.