MathSciDoc: An Archive for Mathematician ∫

@inproceedings{olof1951solid,
  title={Solid spaces and absolute retracts},
  author={Olof Hanner},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203412499114859},
  booktitle={Arkiv for Matematik},
  volume={1},
  number={4},
  pages={375-382},
  year={1951},
}