@article{offlinereinforcementlearningfundamental,
  title = {Offline Reinforcement Learning: Fundamental Barriers for Value Function Approximation},
  author = {Dylan J. Foster and Akshay Krishnamurthy and David Simchi-Levi and Yunzong Xu},
  year = {2021},
  eprint = {2111.10919},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2111.10919v2},
}