%0 Journal Article %A Adrian Constantin %T Positive Solutions of Schrödinger Equations in Two-Dimensional Exterior Domains. %J Monatshefte für Mathematik %D 1997 %P 121-126 %V 123 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MOMA_1997__123_1_178764/ %F MOMA_1997__123_1_178764