@inproceedings{de-xing2007wave,
title={Wave character of metrics and hyperbolic geometric flow},
author={De-Xing Kong, and Kefeng Liu},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191221111303226165616},
booktitle={Journal of Mathematical Physics},
volume={48},
number={10},
pages={103508},
year={2007},
}
De-Xing Kong, and Kefeng Liu. Wave character of metrics and hyperbolic geometric flow. 2007. Vol. 48. In Journal of Mathematical Physics. pp.103508. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191221111303226165616.