@inproceedings{olli1973automorphic,
title={Automorphic quasimeromorphic mappings in$R$^{$n$}},
author={Olli Martio, and Uri Srebro},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203237566664195},
booktitle={Acta Mathematica},
volume={135},
number={1},
pages={221-247},
year={1973},
}
Olli Martio, and Uri Srebro. Automorphic quasimeromorphic mappings in$R$^{$n$}. 1973. Vol. 135. In Acta Mathematica. pp.221-247. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203237566664195.