@inproceedings{david2013sharpness,
title={Sharpness of Rickman’s Picard theorem in all dimensions},
author={David Drasin, and Pekka Pankka},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203404861776801},
booktitle={Acta Mathematica},
volume={214},
number={2},
pages={209-306},
year={2013},
}
David Drasin, and Pekka Pankka. Sharpness of Rickman’s Picard theorem in all dimensions. 2013. Vol. 214. In Acta Mathematica. pp.209-306. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203404861776801.