TY  - JOUR
AU  - L. I. Zhilevich
TI  - The separatrices and limit cycles of certain differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1971
SP  - 782
EP  - 790
VL  - 7
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1971_7_5_a1/
LA  - ru
ID  - DE_1971_7_5_a1
ER  -