MathSciDoc: An Archive for Mathematician ∫

@inproceedings{s.1901on,
  title={On certain discontinuities connected with periodic orbits},
  author={S. S. Hough},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203007224761075},
  booktitle={Acta Mathematica},
  volume={24},
  number={1},
  pages={257-288},
  year={1901},
}