@inproceedings{j.1931on,
title={On the overconvergence of certain sequences of rational functions of best approximation},
author={J. L. Walsh},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203058458827482},
booktitle={Acta Mathematica},
volume={57},
number={1},
pages={411-435},
year={1931},
}
J. L. Walsh. On the overconvergence of certain sequences of rational functions of best approximation. 1931. Vol. 57. In Acta Mathematica. pp.411-435. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203058458827482.