%0 Journal Article
%A Robert Hardt
%A Fang-Hua Lin
%T The Singular Set of an energy minimzing map from B4 to S2.
%J Manuscripta mathematica
%D 1990
%P 275-290
%V 69
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MM2_1990__69_1_155559/
%F MM2_1990__69_1_155559