@article{optimalclusteringinanisotropicgaussian,
  title = {Optimal Clustering in Anisotropic Gaussian Mixture Models},
  author = {Xin Chen and Anderson Y. Zhang},
  year = {2021},
  eprint = {2101.05402},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2101.05402v2},
}