@article{optimalvariableclusteringforhigh,
  title = {Optimal Variable Clustering for High-Dimensional Matrix Valued Data},
  author = {Inbeom Lee and Siyi Deng and Yang Ning},
  year = {2021},
  eprint = {2112.12909},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2112.12909v3},
}