TY  - JOUR
AU  - G. N. Petrovskiǐ
TI  - The approximability property of regular systems of linear differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 359
EP  - 361
VL  - 12
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_2_a22/
LA  - ru
ID  - DE_1976_12_2_a22
ER  -