%0 Journal Article %A M. L. Gorbachuk %T Completeness of the system of eigenfunctions and associated functions of a nonself-adjoint boundary value problem for a differential-operator equation of second order %J Funkcionalʹnyj analiz i ego priloženiâ %D 1973 %P 68-69 %V 7 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1973_7_1_a8/ %G ru %F FAA_1973_7_1_a8