%0 Journal Article %A Dmitri I. Panyushev %T A restriction theorem and the Poincare series for U-invariants. %J Mathematische Annalen %D 1995 %P 655-676 %V 301 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1995__301_4_165313/ %F MAN_1995__301_4_165313