@inproceedings{peterconvergence,
title={ Convergence analysis of vector extended LOBPCG for computing extreme eigenvalues},
author={Peter Benner, and Xin Liang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220424222257833846121},
booktitle={Numer. Lin. Alg. Appl.},
}