%0 Journal Article %A Francois Treves %A Paulo D. Cordaro %T Necessary and sufficient conditions for the local solvability in hyperfunctions of a class of systems of complex vector fields. %J Inventiones mathematicae %D 1995 %P 339-360 %V 120 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1995__120_2_144279/ %F IM_1995__120_2_144279