@inproceedings{yong2010lipschitz,
  title={Lipschitz property of harmonic function on graphs},
  author={Yong Lin, and Lifeng Xi},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220707112434406483551},
  booktitle={Journal of Mathematical Analysis and Applications},
  volume={366},
  number={2},
  pages={673-678},
  year={2010},
}
             
            
                
Yong Lin, and Lifeng Xi. Lipschitz property of harmonic function on graphs. 2010. Vol. 366. In Journal of Mathematical Analysis and Applications. pp.673-678. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220707112434406483551.