MathSciDoc: An Archive for Mathematician ∫

@inproceedings{matts1963studies,
  title={Studies on a convolution inequality},
  author={Matts Essén},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203430208199009},
  booktitle={Arkiv for Matematik},
  volume={5},
  number={1},
  pages={113-152},
  year={1963},
}