@inproceedings{yong2021the,
title={The existence of the solution of the wave equation on graphs},
author={Yong Lin, and Yuanyuan Xie},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220707161226414216582},
booktitle={arXiv},
year={2021},
}

Yong Lin, and Yuanyuan Xie. The existence of the solution of the wave equation on graphs. 2021. In arXiv. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220707161226414216582.