TY  - JOUR
AU  - D. S. Ushkho
AU  - I. V. Chaika
TI  - Limit cycles of an autonomous system with algebraic right-hand sides
JO  - Differencialʹnye uravneniâ
PY  - 1991
SP  - 544
EP  - 546
VL  - 27
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1991_27_3_a25/
LA  - ru
ID  - DE_1991_27_3_a25
ER  -