%0 Journal Article %A D. G. Vasil'ev %T Asymptotic behavior of the spectrum of a~boundary value problem %J Trudy Moskovskogo matematičeskogo obŝestva %D 1986 %P 167-237 %V 49 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1986_49_a7/ %G ru %F MMO_1986_49_a7