@inproceedings{tai-ping2002weak,
title={Weak solutions of general systems of hyperbolic conservation laws},
author={Tai-Ping Liu, and Tong Yang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224210828593556510},
booktitle={Communications in mathematical physics},
volume={230},
number={2},
pages={289-327},
year={2002},
}

Tai-Ping Liu, and Tong Yang. Weak solutions of general systems of hyperbolic conservation laws. 2002. Vol. 230. In Communications in mathematical physics. pp.289-327. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224210828593556510.