TY  - JOUR
AU  - L. I. Zhilevich
TI  - Conditions for the existence and uniqueness of a limit cycle for a certain two-dimensional differential system
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 922
EP  - 924
VL  - 12
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_5_a14/
LA  - ru
ID  - DE_1976_12_5_a14
ER  -