MathSciDoc: An Archive for Mathematician ∫

@inproceedings{per1975on,
  title={On the convergence almost everywhere of double Fourier series},
  author={Per Sjölin},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203456937301234},
  booktitle={Arkiv for Matematik},
  volume={14},
  number={1},
  pages={1-8},
  year={1975},
}