MathSciDoc: An Archive for Mathematician ∫

@inproceedings{i.1889über,
  title={Über ein System linearer partieller Differentialgleichungen},
  author={I. Horn},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202947805797908},
  booktitle={Acta Mathematica},
  volume={12},
  number={1},
  pages={113-175},
  year={1889},
}