@inproceedings{GHVD03,
  title = "Description Logic Programs: Combining Logic Programs with Description Logic",
  author = "Benjamin N. Grosof and Ian Horrocks and Raphael Volz and Stefan Decker",
  year = "2003",
  booktitle = "Proc.\ of the Twelfth International World Wide Web Conference (WWW 2003)",
  isbn = "1-58113-680-3",
  pages = "48--57",
  publisher = "ACM",
  url = "download/2003/p117-grosof.pdf",
}