@misc{W3123459983,
  author = {Chen Zhang and Yu Xie and Hang Bai and Bin Yu and Weihong Li and Yuan Gao},
  title = {A survey on federated learning},
  year = {2021},
  howpublished = {Knowledge-Based Systems},
  doi = {https://doi.org/10.1016/j.knosys.2021.106775}
}