%0 Journal Article
%A G. V. Virabyan
%A G. A. Sargsian
%T On multiple completeness of eigen functions of differential operator bunch generated by general boundary conditions
%J Proceedings of the Yerevan State University. Physical and mathematical sciences
%D 1987
%P 3-8
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/UZERU_1987_3_a0/
%G ru
%F UZERU_1987_3_a0