%0 Journal Article %A Robert Sczech %T Eisenstein groups cocycles for GLn and values of L-functions. %J Inventiones mathematicae %D 1993 %P 581-616 %V 113 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1993__113_2_144138/ %F IM_1993__113_2_144138