@inproceedings{,
title={Lettres d'henri poincaré à L. Fuchs},
author={},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203029328379253},
booktitle={Acta Mathematica},
volume={38},
number={1},
pages={175-184},
year={1915},
}