@inproceedings{anoffpolicypolicygradienttheoremusing,
  title = {An Off-policy Policy Gradient Theorem Using Emphatic Weightings},
  author = {Ehsan Imani and Eric Graves and Martha White},
  year = {2018},
  booktitle = {NeurIPS 2018 12},
  eprint = {1811.09013},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1811.09013v2},
}