%0 Journal Article %A Andrei Reznikov %T Eisenstein Matrix and Existence of Cusp Forms in Rank One Symmetric Spaces. %J Geometric and functional analysis %D 1993 %P 79-106 %V 3 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/GFA_1993__3_6_58113/ %F GFA_1993__3_6_58113