@inproceedings{adrien1990a,
title={A proof of Thurston's topological characterization of rational functions},
author={Adrien Douady, and John H. Hubbard},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203321079377491},
booktitle={Acta Mathematica},
volume={171},
number={2},
pages={263-297},
year={1990},
}
Adrien Douady, and John H. Hubbard. A proof of Thurston's topological characterization of rational functions. 1990. Vol. 171. In Acta Mathematica. pp.263-297. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203321079377491.