@inproceedings{PaHo06a,
  title = "A Comparison of Two Modelling Paradigms in the Semantic Web",
  author = "Peter F.\ Patel-Schneider and Ian Horrocks",
  year = "2006",
  booktitle = "Proc.\ of the Fifteenth International World Wide Web Conference (WWW 2006)",
  isbn = "1-59593-323-9",
  pages = "3--12",
  publisher = "ACM",
  url = "download/2006/PaHo06a.pdf",
}