MathSciDoc: An Archive for Mathematician ∫

@inproceedings{paul1916essai,
  title={Essai sur les fonctons θ du quatrième degré},
  author={Paul Appell},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203031955637273},
  booktitle={Acta Mathematica},
  volume={40},
  number={1},
  pages={291-309},
  year={1916},
}