@inproceedings{n.1960an,
title={An inequality in the geometry of numbers},
author={N. Oler},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203155734916914},
booktitle={Acta Mathematica},
volume={105},
number={1},
pages={19-48},
year={1960},
}