%0 Journal Article %A Haruzo Hida %T On Congruence Divisors of Cusp Forms as Factors of Special Values of Their Zeta Functions. %J Inventiones mathematicae %D 1981 %P 221-262 %V 64 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1981__64_142822/ %F IM_1981__64_142822