Reference for “Authoring Techniques for Device Independence”

@TechReport{Hanrahan:04:ATD,
  author      = "Rotan Hanrahan and Roland Merrick",
  title       = "Authoring Techniques for Device Independence",
  month       = feb,
  note        = "http://www.w3.org/TR/2004/NOTE-di-atdi-20040218/",
  year        = "2004",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}