@inproceedings{MoHS07b,
  title = "Adding Integrity Constraints to {OWL}",
  author = "Boris Motik and Ian Horrocks and Ulrike Sattler",
  year = "2007",
  booktitle = "Proc.\ of the Third Int.\ Workshop on OWL Experiences and Directions (OWLED 2007)",
  number = "258",
  series = "CEUR (\url{http://ceur-ws.org/})",
  url = "download/2007/MoHS07b.pdf",
}