%0 Journal Article %A M. M. Faddeev %A R. G. Shterenberg %T On the Similarity of Some Differential Operators to Self-Adjoint Ones %J Matematičeskie zametki %D 2002 %P 292-302 %V 72 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2002_72_2_a12/ %G ru %F MZM_2002_72_2_a12