@inproceedings{h.1905sur, title={Sur la méthode horistique de Gyldén}, author={H. Poincaré}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203017317004161}, booktitle={Acta Mathematica}, volume={29}, number={1}, pages={235-271}, year={1905}, }