MathSciDoc: An Archive for Mathematician ∫

@inproceedings{hans1948über,
  title={Über den Bereich Absoluter Konvergenz der Poincaréschen Reihen},
  author={Hans Petersson},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203124354538679},
  booktitle={Acta Mathematica},
  volume={80},
  number={1},
  pages={23-63},
  year={1948},
}