H. Shuker, Nazar, نزار, Husam Q. Mohammad, حسام, and Shaimaa H. Ahmad. 2025. “On Singular and Non Singular Rings”. AL-Rafidain Journal of Computer Sciences and Mathematics 3 (1):111-16. https://rjps.uomosul.edu.iq/index.php/csmj/article/view/20047.