%0 Journal Article %A S. E. Cheremshantsev %T Expansion in eigenfunctions of a~nonselfadjoint operator with purely continuous spectrum %J Izvestiya. Mathematics %D 1989 %P 113-139 %V 32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1989_32_1_a6/ %G en %F IM2_1989_32_1_a6