%0 Journal Article %A Kh. Kh. Murtazin %T Spectrum of the nonself-adjoint Schr\"odinger operator in unbounded regions %J Matematičeskie zametki %D 1971 %P 19-26 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1971_9_1_a2/ %G ru %F MZM_1971_9_1_a2