%0 Journal Article %A Yu. A. Neretin %T The action of an overalgebra on the Plancherel decomposition and shift operators in the imaginary direction %J Izvestiya. Mathematics %D 2002 %P 1035-1046 %V 66 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2002_66_5_a3/ %G en %F IM2_2002_66_5_a3