%0 Journal Article
%A V. F. Lazutkin
%T An estimate of the length of the gaps in the spectrum of the Laplace operator for a plane convex domain
%J Doklady Akademii Nauk
%D 1979
%P 20-23
%V 245
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1979_245_1_a3/
%G ru
%F DAN_1979_245_1_a3