%0 Journal Article
%A Frolík, Zdeněk
%T Invariance of $G_\delta$-spaces under mappings
%J Czechoslovak Mathematical Journal
%D 1961
%P 258-261
%V 11
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1961.100459/
%R 10.21136/CMJ.1961.100459
%G en
%F 10_21136_CMJ_1961_100459