%0 Journal Article %A K. A. Mirzoev %T On a class of operators connected with second-order differential equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2000 %P 1159-1160 %V 55 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2000_55_6_a14/ %G en %F RM_2000_55_6_a14