@inproceedings{yi2015a,
title={A geometric heat flow for vector fields},
author={Yi Li, and Kefeng Liu},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191221111553839084664},
booktitle={Science China Mathematics},
volume={58},
number={4},
pages={673-688},
year={2015},
}