@inproceedings{ulf1962stochastic,
title={Stochastic groups},
author={Ulf Grenander},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203426838484979},
booktitle={Arkiv for Matematik},
volume={4},
number={4},
pages={333-345},
year={1962},
}