MathSciDoc: An Archive for Mathematician ∫

@inproceedings{allvar1905zur,
  title={Zur Kenntniss der Kreispunkte},
  author={Allvar Gullstrand},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203016649783155},
  booktitle={Acta Mathematica},
  volume={29},
  number={1},
  pages={59-100},
  year={1905},
}