D. MAHMOOD, R. Rings in which Every Simple Right R-Module is Flat. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 1, n. 1, p. 88–95, 2004. DOI: 10.33899/csmj.2004.164099 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36959. Acesso em: 18 dec. 2025.