@article{hierarchicalquantizedfederatedlearning,
  title = {Hierarchical Federated Learning with Quantization: Convergence Analysis and System Design},
  author = {Lumin Liu and Jun Zhang and Shenghui Song and Khaled B. Letaief},
  year = {2021},
  eprint = {2103.14272},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.14272v2},
}