@inproceedings{xiang-ke2018lax,
title={Lax integrability and the peakon problem for the modified CamassaHolm equation},
author={Xiang-Ke Chang, and Jacek Szmigielski},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191221112653571887722},
booktitle={Communications in Mathematical Physics},
volume={358},
number={1},
pages={295-341},
year={2018},
}

Xiang-Ke Chang, and Jacek Szmigielski. Lax integrability and the peakon problem for the modified CamassaHolm equation. 2018. Vol. 358. In Communications in Mathematical Physics. pp.295-341. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191221112653571887722.