D. MAHMOOD, R.; رائدة; M. ABDUL-JABBAR, A. On Rings Whose Simple Singular R-Modules Are Flat, I. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 7, n. 1, p. 51–57, 2025. Disponível em: https://ojs.uomosul.edu.iq/index.php/csmj/article/view/19572. Acesso em: 6 aug. 2025.