ELOSTATH, L. .; MAHDI, H. . Somewhere dense on upper bounded \(T_{0}\)-Alexandroff spaces. Journal of Advanced Studies in Topology, [S. l.], v. 11, n. 1-2, p. 6–15, 2022. Disponível em: http://m-sciences.com/index.php/jast/article/view/274. Acesso em: 5 jul. 2022.