M. KHALIL, S. On Sπ Weakly Regular Rings, II. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 7, n. 1, p. 145–150, 2010. DOI: 10.33899/csmj.2010.163853 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36603. Acesso em: 18 dec. 2025.