TY  - JOUR
AU  - N. P. Morozov
TI  - A transformation of an asymptotic expansion of the period
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 1580
EP  - 1586
VL  - 12
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_9_a5/
LA  - ru
ID  - DE_1976_12_9_a5
ER  -