%0 Journal Article
%A M. V. Fedoryuk
%T Asymptotics of the spectrum of Heun's equation and of Heun's functions
%J Izvestiya. Mathematics 
%D 1992
%P 621-635
%V 38
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1992_38_3_a8/
%G en
%F IM2_1992_38_3_a8