TY  - JOUR
AU  - N. I. Avdonin
TI  - Examples of the generation of a limit cycle from a separatrix loop and a singular cycle
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 1335
EP  - 1337
VL  - 5
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_7_a21/
LA  - ru
ID  - DE_1969_5_7_a21
ER  -