Reference for “Representing Classes As Property Values on the Semantic Web”

@TechReport{Noy:05:RCA,
  author      = "Natasha Noy",
  title       = "Representing Classes As Property Values on the Semantic Web",
  month       = apr,
  note        = "http://www.w3.org/TR/2005/NOTE-swbp-classes-as-values-20050405",
  year        = "2005",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}