TY  - JOUR
AU  - A. F. Filippov
TI  - Stability and instability by the first approximation
JO  - Differencialʹnye uravneniâ
PY  - 2000
SP  - 475
EP  - 485
VL  - 36
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2000_36_4_a7/
LA  - ru
ID  - DE_2000_36_4_a7
ER  -