H. SHUKER, N.; نزار; S. YOUNIS, R.; رانی. On Dual Rings. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 1, n. 1, p. 20–26, 2025. Disponível em: https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19925. Acesso em: 6 aug. 2025.