TY  - JOUR
AU  - I. N. Yakushina
TI  - Asymptotic expansions of the solutions of the $n$-order differential equations with two turning points
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1990
SP  - 172
EP  - 179
VL  - 186
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1990_186_a16/
LA  - ru
ID  - ZNSL_1990_186_a16
ER  -