@article{alogicforreasoningaboutupper,
  title = {A Logic for Reasoning about Upper Probabilities},
  author = {Joseph Y. Halpern and Riccardo Pucella},
  year = {2014},
  eprint = {1408.1485},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1408.1485v1},
}