%0 Journal Article %A R. Lee %A J. Schwermer %T The Lefschetz Number of an Involution on the Space of Harmonic Cusp Forms of SL3. %J Inventiones mathematicae %D 1983 %P 189-240 %V 73 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1983__73_143043/ %F IM_1983__73_143043