KADEM, Sameer; AUBAD, Ali; MAJEED, Abdulrahman H. The non-zero divisor graph of a ring. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 43, p. 975–983, 2020. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7270. Acesso em: 27 oct. 2026.