KHALAF, A. B.; NAMIQ, S. F. \(\lambda _{c}\)-Open Sets and \(\lambda _{c}\)-Separation Axioms in Topological Spaces. Journal of Advanced Studies in Topology, [S. l.], v. 4, n. 1, p. 150:158, 2012. DOI: 10.20454/jast.2013.528. Disponível em: http://www.m-sciences.com/index.php/jast/article/view/528. Acesso em: 2 mar. 2021.