@inproceedings{erling1970hyperfinite,
title={Hyperfinite product factors},
author={Erling Størmer},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203447003284150},
booktitle={Arkiv for Matematik},
volume={9},
number={1},
pages={165-170},
year={1970},
}