%0 Journal Article
%A Zapletal, Jindřich
%T On the existence of a $\sigma $-closed dense subset
%J Commentationes Mathematicae Universitatis Carolinae
%D 2010
%P 513-517
%V 51
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_2010__51_3_a12/
%G en
%F CMUC_2010__51_3_a12