@article{hierarchicalcausalbandit,
  title = {Hierarchical Causal Bandit},
  author = {Ruiyang Song and Stefano Rini and Kuang Xu},
  year = {2021},
  eprint = {2103.04215},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.04215v1},
}