@inproceedings{CuHo08a,
  title = "Privacy-Preserving Query Answering in Logic-based Information Systems",
  author = "Bernardo {Cuenca Grau} and Ian Horrocks",
  year = "2008",
  booktitle = "Proc.\ of the 18th Eur.\ Conf.\ on Artificial Intelligence (ECAI~2008)",
  pages = "40--44",
  publisher = "IOS Press",
  url = "download/2008/CuHo08a.pdf",
}