GANSTER, M. A NOTE ON SIMPLE EXTENSIONS AND SEMI-COMPACT TOPOLOGIES. Tamkang Journal of Mathematics, [S. l.], v. 22, n. 4, p. 343–351, 1991. DOI: 10.5556/j.tkjm.22.1991.4623. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4623. Acesso em: 7 may. 2024.