TY  - JOUR
AU  - V. S. Denisov
TI  - Limit cycles of an autonomous system
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 1572
EP  - 1579
VL  - 15
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_9_a3/
LA  - ru
ID  - DE_1979_15_9_a3
ER  -