%0 Journal Article
%A J. Witkowski
%T On a characterization of the Euclidean sphere
%J Annales Polonici Mathematici
%D 1963
%P 121-127
%V 13
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-13-2-121-127/
%R 10.4064/ap-13-2-121-127
%G en
%F 10_4064_ap_13_2_121_127