@inproceedings{a.1902über,
title={Über Abel's Verallgemeinerung der binomischen Formel},
author={A. Hurwitz},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203010599076102},
booktitle={Acta Mathematica},
volume={26},
number={1},
pages={199-203},
year={1902},
}