RAIHAN, M. Characterizations of Principal n-Ideals in Terms of Relatively Normal Nearlattices. Journal of Bangladesh Academy of Sciences, [S. l.], v. 33, n. 2, p. 198–208, 2010. DOI: 10.3329/jbas.v33i2.4103. Disponível em: https://banglajol.info/index.php/JBAS/article/view/4103. Acesso em: 30 jun. 2024.