%0 Journal Article
%A J. E. Valentine
%A S. G. Wayment
%T Metric characterizations of hyperbolic and Euclidean spaces
%J Colloquium Mathematicum
%D 1972
%P 259-264
%V 25
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-25-2-259-264/
%R 10.4064/cm-25-2-259-264
%G en
%F 10_4064_cm_25_2_259_264