%0 Journal Article
%A Bourgain, Jean
%A Brezis, Haim
%A Mironescu, Petru
%T $H^{1/2}$ maps with values into the circle : minimal connections, lifting, and the Ginzburg-Landau equation
%J Publications Mathématiques de l'IHÉS
%D 2004
%P 1-115
%V 99
%I Springer
%U http://archive.numdam.org/articles/10.1007/s10240-004-0019-5/
%R 10.1007/s10240-004-0019-5
%G en
%F PMIHES_2004__99__1_0