@inproceedings{po-ning2016quasi-local,
title={Quasi-local energy in presence of gravitational radiation},
author={Po-Ning Chen, Mu-Tao Wang, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160820165600289085332},
year={2016},
}