@inproceedings{shing-tung1995harnack,
title={Harnack inequality for non-self-adjoint evolution equations},
author={Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224204023792719119},
booktitle={Mathematical Research Letters},
volume={2},
number={4},
pages={387-399},
year={1995},
}

Shing-Tung Yau. Harnack inequality for non-self-adjoint evolution equations. 1995. Vol. 2. In Mathematical Research Letters. pp.387-399. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224204023792719119.