@misc{owl-ref-w3c,
  title = "{OWL} {W}eb {O}ntology {L}anguage Reference",
  author = "Sean Bechhofer and van Harmelen, Frank and Jim Hendler and Ian Horrocks and Deborah L. McGuinness and Peter F.\ Patel-Schneider
and Lynn Andrea Stein",
  year = "2004",
  howpublished = "{W3C} {R}ecommendation",
  institution = "World Wide Web Consortium",
  month = "10 February",
  note = "Available at \url{http://www.w3.org/TR/owl-ref/}",
  url = "<a href="http://www.w3.org/TR/owl-ref/">http://www.w3.org/TR/owl-ref/</a>",
}