@inproceedings{yong2010ricci,
title={Ricci curvature and eigenvalue estimate on locally finite graphs},
author={Yong Lin, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203604155582057},
booktitle={Mathematical research letters},
volume={17},
number={2},
pages={343-356},
year={2010},
}

Yong Lin, and Shing-Tung Yau. Ricci curvature and eigenvalue estimate on locally finite graphs. 2010. Vol. 17. In Mathematical research letters. pp.343-356. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203604155582057.