@inproceedings{c.1952on,
title={On a theorem of Hanner},
author={C. H. Dowker},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203416055564885},
booktitle={Arkiv for Matematik},
volume={2},
number={4},
pages={307-313},
year={1952},
}