Reference for “Image Annotation on the Semantic Web”

@TechReport{Stamou:06:IAS,
  author      = "Giorgos Stamou and Rapha{\"{e}}l Troncy and Jacco van Ossenbruggen and Jeff Z. Pan",
  title       = "Image Annotation on the Semantic Web",
  month       = mar,
  note        = "http://www.w3.org/TR/2006/WD-swbp-image-annotation-20060322/",
  year        = "2006",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}