XIA, Shengxiang. Characterizations of spaces with locally countable weak bases. Scientia Series A: Mathematical Sciences, [S. l.], v. 14, p. 25–30, 2007. DOI: 10.71712/. Disponível em: https://revistas.usm.cl/scientia/article/view/93.. Acesso em: 7 jun. 2025.