%0 Journal Article %A José Felipe Voloch %A Robert F. Coleman %T Companion forms and Kodaira-Spencer theory. %J Inventiones mathematicae %D 1992 %P 263-282 %V 110 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1992__110_2_144051/ %F IM_1992__110_2_144051