@inproceedings{xin2013trace,
title={Trace minimization principles for positive semi-definite pencils},
author={Xin Liang, Ren-Cang Li, and Zhaojun Bai},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220424215534723443115},
booktitle={Linear Algebra Appl.},
volume={438},
number={7},
pages={3085-3106},
year={2013},
}
Xin Liang, Ren-Cang Li, and Zhaojun Bai. Trace minimization principles for positive semi-definite pencils. 2013. Vol. 438. In Linear Algebra Appl.. pp.3085-3106. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220424215534723443115.