@inproceedings{herbert2001best,
title={Best uniform rational approximation of$x$^{α}on [0, 1]},
author={Herbert R. Stahl},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203342052302636},
booktitle={Acta Mathematica},
volume={190},
number={2},
pages={241-306},
year={2001},
}