@inproceedings{d11,
  title = "Unsharp Values, Domains and Topoi",
  author = "Andreas D{\"o}ring and Rui S. Barbosa",
  year = "2011",
  booktitle = "to appear in Proceedings of Quantum Field Theory and Gravity, Regensburg (2010)",
  url = "http://arxiv.org/abs/1107.1083",
}