@article{multiagentreinforcementlearningwitha,
  title = {Multi-Agent Reinforcement Learning with a Hierarchy of Reward Machines},
  author = {Xuejing Zheng and Chao Yu},
  year = {2024},
  eprint = {2403.07005},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2403.07005v1},
}