MathSciDoc: An Archive for Mathematician ∫

@inproceedings{h.1949on,
  title={On a class of orthogonal series},
  author={H. Bohman},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203409030757833},
  booktitle={Arkiv for Matematik},
  volume={1},
  number={1},
  pages={13-19},
  year={1949},
}