TY  - JOUR
AU  - S. I. Dovnar
AU  - L. A. Cherkas
TI  - Curves of Separatrix Cycles of a Quadratic System. The Case of Three Antisaddles and One Saddle
JO  - Differencialʹnye uravneniâ
PY  - 2002
SP  - 313
EP  - 318
VL  - 38
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2002_38_3_a3/
LA  - ru
ID  - DE_2002_38_3_a3
ER  -