@inproceedings{n.1990mean,
title={Mean values of subtemperatures over level surfaces of Green functions},
author={N. A. Watson},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203537491341576},
booktitle={Arkiv for Matematik},
volume={30},
number={1},
pages={165-185},
year={1990},
}
N. A. Watson. Mean values of subtemperatures over level surfaces of Green functions. 1990. Vol. 30. In Arkiv for Matematik. pp.165-185. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203537491341576.