Reference for “Language Tags and Locale Identifiers for the World Wide Web”

@TechReport{Sasaki:06:LTL,
  author      = "Felix Sasaki",
  title       = "Language Tags and Locale Identifiers for the World Wide Web",
  month       = jun,
  note        = "http://www.w3.org/TR/2006/WD-ltli-20060612/",
  year        = "2006",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}