@inproceedings{stephen1998boundary,
title={Boundary growth theorems for superharmonic functions},
author={Stephen J. Gardiner},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203555949607724},
booktitle={Arkiv for Matematik},
volume={37},
number={2},
pages={255-273},
year={1998},
}