@inproceedings{p.1982the,
title={The arithmetic and geometry of some hyperbolic three manifolds},
author={P. Sarnak},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203300398081343},
booktitle={Acta Mathematica},
volume={151},
number={1},
pages={253-295},
year={1982},
}