TY  - JOUR
AU  - E. A. Grebenikov
AU  - F. K. Vaskan
TI  - The reducibility of multifrequency systems of differential equations with summable series
JO  - Differencialʹnye uravneniâ
PY  - 1970
SP  - 403
EP  - 411
VL  - 6
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1970_6_3_a0/
LA  - ru
ID  - DE_1970_6_3_a0
ER  -