@inproceedings{siegfried1992boundary,
title={Boundary behavior of extremal plurisubharmonic functions},
author={Siegfried Momm},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203321638639493},
booktitle={Acta Mathematica},
volume={172},
number={1},
pages={51-75},
year={1992},
}