%0 Journal Article %A F. G. Maksudov %A V. B. Shakhmurov %T On the completeness of the system of eigenvectors and associated vectors of nonlocal boundary value problems for quasielliptic partial differential operator equations %J Doklady Akademii Nauk %D 1983 %P 33-35 %V 268 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_268_1_a6/ %G ru %F DAN_1983_268_1_a6