MathSciDoc: An Archive for Mathematician ∫

@inproceedings{p.1885ueber,
  title={Ueber den Begriff der Länge einer Curve},
  author={P. du Bois-Reymond},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202936013562800},
  booktitle={Acta Mathematica},
  volume={6},
  number={1},
  pages={167-168},
  year={1885},
}