Fuzzy Bipolar Soft Quasi-ideals in Ordered Semigroups. Punjab University Journal of Mathematics, [S. l.], v. 54, n. 6, p. 375–409, 2025. Disponível em: https://pujm.pu.edu.pk/index.php/pujm/article/view/226. Acesso em: 29 jun. 2025.