@inproceedings{richard1981proof,
title={Proof of the positive mass theorem. II},
author={Richard Schoen, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203422356731028},
booktitle={Communications in Mathematical Physics},
volume={79},
number={2},
pages={231-260},
year={1981},
}

Richard Schoen, and Shing-Tung Yau. Proof of the positive mass theorem. II. 1981. Vol. 79. In Communications in Mathematical Physics. pp.231-260. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203422356731028.