@inproceedings{alexander2004eigenvalues,
title={Eigenvalues of elliptic operators and geometric applications},
author={Alexander Grigoryan, Yuri Netrusov, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203809645068086},
booktitle={Surveys in differential geometry},
volume={9},
number={1},
pages={147-217},
year={2004},
}

Alexander Grigoryan, Yuri Netrusov, and Shing-Tung Yau. Eigenvalues of elliptic operators and geometric applications. 2004. Vol. 9. In Surveys in differential geometry. pp.147-217. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203809645068086.