@article{isfreechoicepermissionadmissiblein,
  title = {Is Free Choice Permission Admissible in Classical Deontic Logic?},
  author = {Guido Governatori and Antonino Rotolo},
  year = {2019},
  eprint = {1905.07696},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1905.07696v2},
}