@inproceedings{mu-tao2005subsets,
title={Subsets of Grassmannians preserved by mean curvature},
author={Mu-Tao Wang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160821232558564188372},
booktitle={Communications in Analysis and Geometry },
volume={13},
number={5},
year={2005},
}

Mu-Tao Wang. Subsets of Grassmannians preserved by mean curvature. 2005. Vol. 13. In Communications in Analysis and Geometry . http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160821232558564188372.