TY  - JOUR
AU  - R. A. Prokhorova
TI  - On the question of stability with respect to the first approximation
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 766
EP  - 769
VL  - 12
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_4_a23/
LA  - ru
ID  - DE_1976_12_4_a23
ER  -