D. MAHMOOD, R.; M. KHALIL, S. On WJCP-Injective Rings. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 10, n. 4, p. 13–19, 2013. DOI: 10.33899/csmj.2013.163542 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/37013. Acesso em: 2 nov. 2025.