@inproceedings{interoperable07,
  author    = {Sabrina Baselice and
               Piero A. Bonatti and
               Marco Faella},
  title     = {On Interoperable Trust Negotiation Strategies.},
  year      = {2007},
  pages     = {39-50},
  booktitle = {8th IEEE International Workshop on Policies for Distributed
               Systems and Networks (POLICY 2007), 13-15 June 2007, Bologna,
               Italy},
  publisher = {IEEE Computer Society}
}