On П – Pure Ideals. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 11, n. 2, p. 83–86, 2014. DOI: 10.33899/csmj.2014.163722. Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36940. Acesso em: 25 jun. 2026.