@inproceedings{hmpuDL09,
  title = "{A Comparison of Query Rewriting Techniques for DL-Lite}",
  author = "H\'ector P\'erez-Urbina and Boris Motik and Ian Horrocks",
  year = "2009",
  address = "Oxford, UK.",
  booktitle = "In Proc.\ of the Int.\ Workshop on Description Logics (DL2009)",
  month = "July",
}