@inproceedings{f.1989the,
title={The topology of rational functions and divisors of surfaces},
author={F. R. Cohen, R. L. Cohen, B. M. Mann, and R. J. Milgram},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203315803140455},
booktitle={Acta Mathematica},
volume={166},
number={1},
pages={163-221},
year={1989},
}
F. R. Cohen, R. L. Cohen, B. M. Mann, and R. J. Milgram. The topology of rational functions and divisors of surfaces. 1989. Vol. 166. In Acta Mathematica. pp.163-221. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203315803140455.