@inproceedings{thomas1991plane,
title={Plane harmonic measures live on sets of σ-finite length},
author={Thomas H. Wolff},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203540029963598},
booktitle={Arkiv for Matematik},
volume={31},
number={1},
pages={137-172},
year={1991},
}