JORF, M.; OUKHTITE, L. On center graphs of finite associative rings. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 76, n. 6, p. 843–854, 2024. DOI: 10.3842/umzh.v76i5.7391. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7391. Acesso em: 5 dec. 2025.