FENG, Yuming; TU, Dan; LI, Hongyi. INTERVAL-VALUED FUZZY HYPERGRAPH AND INTERVAL-VALUED FUZZY HYPEROPERATIONS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 36, p. 1–12, 2016. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6660. Acesso em: 5 sep. 2026.