TY  - JOUR
AU  - V. P. Nozdracheva
TI  - Estimates for periods of cycles generated by a singular cycle with two separatrices
JO  - Differencialʹnye uravneniâ
PY  - 1995
SP  - 1764
EP  - 1765
VL  - 31
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1995_31_10_a23/
LA  - ru
ID  - DE_1995_31_10_a23
ER  -