%0 Journal Article %A Hiroaki Terao %T Generalized Exponents of a Free Arrangement of Hyperplanes and Shepherd-Todd-Brieskorn Formula. %J Inventiones mathematicae %D 1981 %P 159-180 %V 63 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1981__63_142794/ %F IM_1981__63_142794