%0 Journal Article
%A D. G. Vasil'ev
%T Two-term asymptotics of the spectrum of natural frequencies of a
%J Doklady Akademii Nauk
%D 1990
%P 777-780
%V 310
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1990_310_4_a0/
%G ru
%F DAN_1990_310_4_a0