H. SHUKER, N.; نزار; HAMMODAT, A.; علاء. On Idempotent Elements. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 6, n. 3, p. 49–56, 2025. Disponível em: https://rjps.uomosul.edu.iq/index.php/csmj/article/view/19420. Acesso em: 5 aug. 2025.