@article{alogicforreasoningaboutambiguity,
  title = {A logic for reasoning about ambiguity},
  author = {Joseph Y. Halpern and Willemien Kets},
  year = {2014},
  eprint = {1401.2011},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1401.2011v1},
}