@article{DelgrandeSchaubTompits2006,
  author    = {James Patrick Delgrande and Torsten H. Schaub and Hans Tompits},
  title     = {A Preference-Based Framework for Updating logic Programs : preliminary reports},
  url       = {http://www.easychair.org/FLoC-06/PREFS-preproceedings.pdf},
  year      = {2006},
}