@inproceedings{leopold1975random,
title={Random coverings},
author={Leopold Flatto, and Donald J. Newman},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203242593076220},
booktitle={Acta Mathematica},
volume={138},
number={1},
pages={241-264},
year={1975},
}