TY  - JOUR
AU  - S. B. Vakarchuk
TI  - $K$-Functionals and Exact Values of n-Widths of Certain Classes in the Spaces $C(2\pi )$ and $L_1(2\pi )$
JO  - Matematičeskie zametki
PY  - 2002
SP  - 522
EP  - 531
VL  - 71
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2002_71_4_a3/
LA  - ru
ID  - MZM_2002_71_4_a3
ER  -