%0 Journal Article
%A S. Franklin
%T Open and image-open relations
%J Colloquium Mathematicum
%D 1964
%P 209-211
%V 12
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-12-2-209-211/
%R 10.4064/cm-12-2-209-211
%G en
%F 10_4064_cm_12_2_209_211