%0 Journal Article
%A Vagn Lundsgaard Hansen
%T On the Space of Maps of a Closed Surface into the 2-Sphere.
%J Mathematica Scandinavica
%D 1974
%P 149-158
%V 35
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1974__35_166381/
%F MS2_1974__35_166381