%0 Journal Article
%A Thomas Hasanis
%T A new characterization of the sphere in $R^3$
%J Annales Polonici Mathematici
%D 1980
%P 47-49
%V 38
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-38-1-47-49/
%R 10.4064/ap-38-1-47-49
%G en
%F 10_4064_ap_38_1_47_49