@inproceedings{kaj1995integrability,
title={Integrability of Green potentials in fractal domains},
author={Kaj Nyström},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203549288282671},
booktitle={Arkiv for Matematik},
volume={34},
number={2},
pages={335-381},
year={1995},
}