@inproceedings{conan2009a,
title={A quadratic inequality for sum of coadjoint orbits},
author={Conan Leung, and Xiaowei Wang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160830144051220254560},
booktitle={Comm Analy Geom},
volume={17},
number={2},
pages={265-282},
year={2009},
}

Conan Leung, and Xiaowei Wang. A quadratic inequality for sum of coadjoint orbits. 2009. Vol. 17. In Comm Analy Geom. pp.265-282. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160830144051220254560.