TY  - JOUR
AU  - A. S. Kochurov
TI  - Approximation by Piecewise Constant Functions on a Square
JO  - Matematičeskie zametki
PY  - 2004
SP  - 592
EP  - 602
VL  - 75
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2004_75_4_a7/
LA  - ru
ID  - MZM_2004_75_4_a7
ER  -