%0 Journal Article %A Argaez, Carlos %A Melgaard, Michael %T Existence of a minimizer for the quasi-relativistic Kohn-Sham model %J Electronic journal of differential equations %D 2012 %V 2012 %U http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a15/ %G en %F EJDE_2012__2012__a15