@inproceedings{DBLP:conf/sum/LukMST2013,
  title = "Group Preferences for Query Answering in Datalog+⁄− Ontologies",
  author = "Thomas Lukasiewicz and Maria Vanina Martinez and Gerardo I. Simari and Oana Tifrea-Marciuska",
  year = "2013",
  booktitle = "Proceedings of the 7th International Conference on Scalable Uncertainty Management, SUM 2013, Washington DC, USA, September 16-18, 2013",
  editor = "W. Liu, V. S.  Subrahmanian and J. Wijsen",
  pages = "360-373",
  publisher = "Springer",
  series = "Lecture Notes in Computer Science",
  url = "http://dx.doi.org/10.1007/978-3-642-40381-1_28",
  volume = "8078",
}