D. Mahmood, Raida, and Abdullah M. Abdul-Jabbar. “Sπ-Weakly Regular Rings”. AL-Rafidain Journal of Computer Sciences and Mathematics 4, no. 2 (December 3, 2007): 25–32. Accessed December 17, 2025. https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36675.