TY  - JOUR
AU  - M. V. Dolov
TI  - The limit cycles of a certain class of differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 1330
EP  - 1334
VL  - 5
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_7_a20/
LA  - ru
ID  - DE_1969_5_7_a20
ER  -