@inproceedings{goro1973on,
title={On the trace formula for Hecke operators},
author={Goro Shimura},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203232141668170},
booktitle={Acta Mathematica},
volume={132},
number={1},
pages={245-281},
year={1973},
}