TY  - JOUR
AU  - N. P. Korneichuk
TI  - Widths in $L_p$ of classes of continuous and of differentiable functions, and optimal methods of coding and recovering functions and their derivatives
JO  - Izvestiya. Mathematics 
PY  - 1982
SP  - 227
EP  - 247
VL  - 18
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1982_18_2_a1/
LA  - en
ID  - IM2_1982_18_2_a1
ER  -