@inproceedings{h.1882théorie,
title={Théorie des groupes fuchsiens},
author={H. Poincaré},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202926164317711},
booktitle={Acta Mathematica},
volume={1},
number={1},
pages={1-62},
year={1882},
}