@article{confidenceregionofsingularsubspacesfor,
  title = {Confidence Region of Singular Subspaces for Low-rank Matrix Regression},
  author = {Dong Xia},
  year = {2018},
  eprint = {1805.09871},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1805.09871v3},
}