TY  - JOUR
AU  - G. N. Petrovskiǐ
TI  - Certain properties of systems of linear differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1974
SP  - 1652
EP  - 1661
VL  - 10
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1974_10_9_a10/
LA  - ru
ID  - DE_1974_10_9_a10
ER  -