MathSciDoc: An Archive for Mathematician ∫

@inproceedings{arne1963a,
  title={A generalization of two-norm spaces},
  author={Arne Persson},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203429390162002},
  booktitle={Arkiv for Matematik},
  volume={5},
  number={1},
  pages={27-36},
  year={1963},
}