@article{coupledregularizedsamplecovariancematrix,
  title = {Coupled regularized sample covariance matrix estimator for multiple classes},
  author = {Elias Raninen and Esa Ollila},
  year = {2020},
  eprint = {2011.04315},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2011.04315v2},
}