TY  - JOUR
AU  - V. I. Ivanov
TI  - Approximation in $L_p$ by means of piecewise-constant functions
JO  - Matematičeskie zametki
PY  - 1988
SP  - 64
EP  - 79
VL  - 44
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1988_44_1_a6/
LA  - ru
ID  - MZM_1988_44_1_a6
ER  -