@article{offpolicyevaluationinpartiallyobserved,
  title = {Off-Policy Evaluation in Partially Observed Markov Decision Processes under Sequential Ignorability},
  author = {Yuchen Hu and Stefan Wager},
  year = {2021},
  eprint = {2110.12343},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2110.12343v4},
}