TY  - JOUR
AU  - S. B. Vakarchuk
TI  - On the best linear approximation methods and the widths of certain classes of analytic functions
JO  - Matematičeskie zametki
PY  - 1999
SP  - 186
EP  - 193
VL  - 65
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1999_65_2_a2/
LA  - ru
ID  - MZM_1999_65_2_a2
ER  -