%0 Journal Article %A A. I. Vahabov %T On the question of completeness of the system of eigenfunctions of a nonregular ordinary differential pencil %J Doklady Akademii Nauk %D 1981 %P 15-18 %V 257 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_257_1_a1/ %G ru %F DAN_1981_257_1_a1