FAHIMI, N.; NOZARI, T.; MAHJOOB, R. On the \(n^∗\)− and \(γ_{n}^{∗}\)− complete fuzzy hypergroups. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 43, p. 320–330, 2020. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7338. Acesso em: 6 nov. 2026.