@inproceedings{richard1981proof,
title={Proof of the positive mass theorem. 2.},
author={Richard Schon, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203650871282069},
booktitle={Commun. Math. Phys.},
volume={79},
pages={231-260},
year={1981},
}

Richard Schon, and Shing-Tung Yau. Proof of the positive mass theorem. 2.. 1981. Vol. 79. In Commun. Math. Phys.. pp.231-260. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224203650871282069.