Characterizations of Regular and Intra-regular Ordered Semigroups by using Generalized Interval Valued Bipolar Fuzzy Quasi-Ideals. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 17, n. 4, p. 3223–3241, 2024. DOI: 10.29020/nybg.ejpam.v17i4.5423. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/5423. Acesso em: 7 nov. 2024.