TY  - JOUR
AU  - V. L. Novikov
TI  - A certain theorem on the characteristic exponents of not almost reducible systems of linear differential equations with almost periodic coefficient matrices
JO  - Differencialʹnye uravneniâ
PY  - 1973
SP  - 857
EP  - 859
VL  - 9
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1973_9_5_a7/
LA  - ru
ID  - DE_1973_9_5_a7
ER  -