%0 Journal Article
%A Frédéric Hélein
%T Approximations of Sobolev maps between an open set and an Euclidean sphere, boundary data, and singularities.
%J Mathematische Annalen
%D 1989
%P 125-140
%V 285
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAN_1989__285_1_164590/
%F MAN_1989__285_1_164590