TY  - JOUR
AU  - N. N. Dedok
TI  - Limit cycles of a system of differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1988
SP  - 683
EP  - 684
VL  - 24
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1988_24_4_a16/
LA  - ru
ID  - DE_1988_24_4_a16
ER  -