TY  - JOUR
AU  - S. S. Mamonov
TI  - Determination of the number of limit cycles of the second kind of systems of differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1988
SP  - 1076
EP  - 1078
VL  - 24
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1988_24_6_a29/
LA  - ru
ID  - DE_1988_24_6_a29
ER  -