MathSciDoc: An Archive for Mathematician ∫

@inproceedings{dagmar1962quadratic,
  title={Quadratic set-valued functions},
  author={Dagmar Renate Henney},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203427065506981},
  booktitle={Arkiv for Matematik},
  volume={4},
  number={4},
  pages={377-378},
  year={1962},
}