@inproceedings{alexander1996radial,
title={Radial rearrangement, harmonic measures and extensions of Beurling's shove theorem},
author={Alexander R. Pruss},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203555452690720},
booktitle={Arkiv for Matematik},
volume={37},
number={1},
pages={183-210},
year={1996},
}

Alexander R. Pruss. Radial rearrangement, harmonic measures and extensions of Beurling's shove theorem. 1996. Vol. 37. In Arkiv for Matematik. pp.183-210. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203555452690720.