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, 2020. Disponível em: https://m-sciences.com/?journal=jast&page=article&op=view&path[]=1636. Acesso em: 16 jun. 2021.