%0 Journal Article
%A È. M. Saak
%T An estimate of the eigenvalues of an elliptic differential operator of divergence form for domains close to an ellipsoid
%J Doklady Akademii Nauk
%D 1975
%P 543-545
%V 224
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1975_224_3_a11/
%G ru
%F DAN_1975_224_3_a11