%0 Journal Article %A A. A. Pozharskii %T Operators of Wannier--Stark type with singular potentials %J Algebra i analiz %D 2002 %P 158-193 %V 14 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2002_14_1_a6/ %G ru %F AA_2002_14_1_a6