%0 Journal Article %A Toshio Oshima %A Jiro Sekiguchi %T Eigenspaces of Invariant Differential Operators on an Affine Symmetric Space. %J Inventiones mathematicae %D 1980 %P 1-82 %V 57 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1980__57_142701/ %F IM_1980__57_142701