TY  - JOUR
AU  - M. V. Fedoryuk
TI  - Asymptotics of the spectrum of Heun's equation and of Heun's functions
JO  - Izvestiya. Mathematics 
PY  - 1992
SP  - 621
EP  - 635
VL  - 38
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1992_38_3_a8/
LA  - en
ID  - IM2_1992_38_3_a8
ER  -