@article{explicitexploreexploitorescapee4near,
  title = {Explicit Explore, Exploit, or Escape ($E^4$): near-optimal safety-constrained reinforcement learning in polynomial time},
  author = {David M. Bossens and Nicholas Bishop},
  year = {2021},
  eprint = {2111.07395},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2111.07395v2},
}