CHANGPHAS, Thawhat; DAVVAZ, Bijan. PROPERTIES OF HYPERIDEALS IN ORDERED SEMIHYPERGROUPS. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 33, p. 425–432, 2014. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6266. Acesso em: 7 aug. 2026.