@article{recoverthespectrumofcovariancematrixa,
  title = {Recover the spectrum of covariance matrix: a non-asymptotic iterative method},
  author = {Juntao Duan and Ionel Popescu and Heinrich Matzinger},
  year = {2022},
  eprint = {2201.00230},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2201.00230v1},
}