%0 Journal Article
%A K. Kh. Boimatov
%T Eigenvalues of elliptic differential operators in
%J Doklady Akademii Nauk
%D 1989
%P 11-14
%V 308
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_308_1_a0/
%G ru
%F DAN_1989_308_1_a0