%0 Journal Article
%A V. F. Lazutkin
%A T. F. Pankratova
%T Asymptotics of the width of gaps in the spectrum of the Sturm--Liouville operator with a periodic potential
%J Doklady Akademii Nauk
%D 1974
%P 1048-1051
%V 215
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_215_5_a7/
%G ru
%F DAN_1974_215_5_a7