TY  - JOUR
AU  - N. S. Leonovich
TI  - Classes of third-order systems without moving critical points
JO  - Differencialʹnye uravneniâ
PY  - 1984
SP  - 1869
EP  - 1877
VL  - 20
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1984_20_11_a3/
LA  - ru
ID  - DE_1984_20_11_a3
ER  -