CHATTERJEE, R. A Study of Fuzzy Ideals in Semigroups and Their Basic Properties. RESEARCH REVIEW International Journal of Multidisciplinary, [S. l.], v. 7, n. 7, p. 205–222, 2022. DOI: 10.31305/rrijm.2022.v07.i07.028. Disponível em: https://www.old1.rrjournals.com/index.php/rrijm/article/view/2645. Acesso em: 19 apr. 2026.