@article{automatedreasoningusingpossibilisticlogi,
  title = {Automated Reasoning Using Possibilistic Logic: Semantics, Belief Revision and Variable Certainty Weights},
  author = {Didier Dubois and Jerome Lang and Henri Prade},
  year = {2013},
  eprint = {1304.1500},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1304.1500v1},
}