%0 Journal Article
%A Katsumi Nomizu
%T A Characterization of n-Spheres in Space Forms and Its Complex Analogue.
%J Mathematische Annalen
%D 1973
%P 75-80
%V 201
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1973__201_162373/
%F MAN_1973__201_162373