BI-IDEALS OF ORDERED SEMIGROUPS BASED ON THE INTERVAL-VALUED FUZZY POINT. Jurnal Teknologi, [S. l.], v. 78, n. 2, 2016. DOI: 10.11113/jt.v78.3841. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/3841.. Acesso em: 23 jul. 2024.