@inproceedings{h.1992a,
title={A general discrepancy theorem},
author={H. -P. Blatt, and H. N. Mhaskar},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203540598726603},
booktitle={Arkiv for Matematik},
volume={31},
number={2},
pages={219-246},
year={1992},
}