@inproceedings{w.1977on,
title={On Iversen's theorem for meromorphic functions with few poles},
author={W. K. Hayman},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203246922825245},
booktitle={Acta Mathematica},
volume={141},
number={1},
pages={115-145},
year={1977},
}