Reference for “Authoring Challenges for Device Independence”

@TechReport{Lewis:03:ACD,
  author      = "Rhys Lewis",
  title       = "Authoring Challenges for Device Independence",
  month       = sep,
  note        = "http://www.w3.org/TR/2003/NOTE-acdi-20030901/",
  year        = "2003",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}