%0 Journal Article
%A Benjamin Halpern
%T Invariant metric properties of maps
%J Fundamenta Mathematicae
%D 1971
%P 203-221
%V 72
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-72-3-203-221/
%R 10.4064/fm-72-3-203-221
%G en
%F 10_4064_fm_72_3_203_221