TY  - JOUR
AU  - A. I. Yablonskii
AU  - A. F. Korzyuk
TI  - Classes of third-order systems with quadratic right-hand sides without moving critical points
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 635
EP  - 640
VL  - 25
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_4_a10/
LA  - ru
ID  - DE_1989_25_4_a10
ER  -