%0 Journal Article %A Charles L. Epstein %T CR-structures on three dimensional circle bundles. %J Inventiones mathematicae %D 1992 %P 351-404 %V 109 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1992__109_2_144025/ %F IM_1992__109_2_144025