@inproceedings{h.1897sur,
title={Sur la polarisation par diffraction},
author={H. Poincaré},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203001578358028},
booktitle={Acta Mathematica},
volume={20},
number={1},
pages={313-355},
year={1897},
}