TY  - JOUR
AU  - O. A. Timoshin
TI  - Approximation of differential polynomials on classes of vector functions
JO  - Matematičeskie zametki
PY  - 1991
SP  - 153
EP  - 155
VL  - 50
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1991_50_1_a22/
LA  - ru
ID  - MZM_1991_50_1_a22
ER  -