MathSciDoc: An Archive for Mathematician ∫

@inproceedings{matts1983a,
  title={A superharmonic proof of the M. Riesz conjugate function theorem},
  author={Matts Essén},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203518117478415},
  booktitle={Arkiv for Matematik},
  volume={22},
  number={1},
  pages={241-249},
  year={1983},
}