DUSZY ´NSKI, Z. Functions and regularity of topological spaces. Tamkang Journal of Mathematics, [S. l.], v. 40, n. 1, p. 67–75, 2009. DOI: 10.5556/j.tkjm.40.2009.37. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/37. Acesso em: 5 may. 2024.