TY  - JOUR
AU  - S. N. Tumanov
TI  - Asymptotic formulae for the real eigenvalues of the Sturm--Liouville problem with two turning points
JO  - Izvestiya. Mathematics 
PY  - 2001
SP  - 1003
EP  - 1016
VL  - 65
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2001_65_5_a5/
LA  - en
ID  - IM2_2001_65_5_a5
ER  -