%0 Journal Article %A Harold P. Boas %A Mei-Chi Shaw %T Sobolev Estimates for the Lewy Operator on Weakly Pseudo-Convex Boundaries. %J Mathematische Annalen %D 1986 %P 221-232 %V 274 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1986__274_164096/ %F MAN_1986__274_164096