TY  - JOUR
AU  - N. N. Ladis
TI  - The structural stability of certain systems of differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1971
SP  - 419
EP  - 423
VL  - 7
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1971_7_3_a4/
LA  - ru
ID  - DE_1971_7_3_a4
ER  -