D. MAHMOOD, R.; M. ABDUL-JABBAR, A. sπ-Weakly Regular Rings. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 4, n. 2, p. 25–32, 2007. DOI: 10.33899/csmj.2007.164013 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36675. Acesso em: 17 dec. 2025.