MathSciDoc: An Archive for Mathematician ∫

@inproceedings{oskar1911über,
  title={Über Lineare Differentialgleichungen mit Rationalen koeffizienten},
  author={Oskar Perron},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203023533653209},
  booktitle={Acta Mathematica},
  volume={34},
  number={1},
  pages={139-163},
  year={1911},
}