@inproceedings{vladimir2003the,
title={The highest smoothness of the Green function implies the highest density of a set},
author={Vladimir V. Andrievskii},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203610987113840},
booktitle={Arkiv for Matematik},
volume={42},
number={2},
pages={217-238},
year={2003},
}
Vladimir V. Andrievskii. The highest smoothness of the Green function implies the highest density of a set. 2003. Vol. 42. In Arkiv for Matematik. pp.217-238. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203610987113840.