TY  - JOUR
AU  - V. P. Zakharov
AU  - Yu. V. Malyshev
TI  - Application of generalized Ljapunov functions to the study of limit cycles on the plane
JO  - Differencialʹnye uravneniâ
PY  - 1972
SP  - 2248
EP  - 2250
VL  - 8
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1972_8_12_a18/
LA  - ru
ID  - DE_1972_8_12_a18
ER  -