@inproceedings{weierstass1923weierstrass,
title={Weierstrass Über Poincarés Theorie der Fuchsschen Funktionen,},
author={Weierstass},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203038188679324},
booktitle={Acta Mathematica},
volume={39},
number={1},
pages={240-245},
year={1923},
}