@inproceedings{artur2003siegel,
title={Siegel disks with smooth boundaries},
author={Artur Avila, Xavier Buff, and Arnaud Chéritat},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203344865798652},
booktitle={Acta Mathematica},
volume={193},
number={1},
pages={1-30},
year={2003},
}
Artur Avila, Xavier Buff, and Arnaud Chéritat. Siegel disks with smooth boundaries. 2003. Vol. 193. In Acta Mathematica. pp.1-30. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203344865798652.