%0 Journal Article %A James Lee Hafner %T Zeros on the Critical Line for Dirichlet Series Attached to Certain Cusp Forms. %J Mathematische Annalen %D 1983 %P 21-38 %V 264 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1983__264_163768/ %F MAN_1983__264_163768