%0 Journal Article %A Christopher Deninger %T On the ...-factor attached to motives. %J Inventiones mathematicae %D 1991 %P 245-262 %V 104 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1991__104_1_143882/ %F IM_1991__104_1_143882