S. Youns AL-Mashhdanny A, H. Shuker N. A Note on Non – Singular Rings. RJCSM [Internet]. 2005 Dec. 7 [cited 2025 Dec. 17];2(2):21-6. Available from: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36822