@inproceedings{f.1947the,
title={The approximation to algebraic numbers by rationals},
author={F. J. Dyson},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203123169160673},
booktitle={Acta Mathematica},
volume={79},
number={1},
pages={225-240},
year={1947},
}