%0 Journal Article %A Chang-Shou Lin %T Uniqueness of least energy solutions to a semilinear elliptic equation in R2. %J Manuscripta mathematica %D 1994 %P 13-20 %V 84 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1994__84_1_155974/ %F MM2_1994__84_1_155974