%0 Journal Article %A S. S. Mirzoev %A F. A. Gulieva %T On the Completeness of Elementary Solutions of a Class of Second-Order Differential Equations with Operator Coefficients %J Matematičeskie zametki %D 2009 %P 797-800 %V 86 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2009_86_5_a15/ %G ru %F MZM_2009_86_5_a15