@inproceedings{p.1915henri,
title={Henri Poincaré, en mathématiques spéciales à Nancy},
author={P. Appell},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203029522069255},
booktitle={Acta Mathematica},
volume={38},
number={1},
pages={189-195},
year={1915},
}