BibTeX Reference for “Voice Extensible Markup Language (VoiceXML) 2.1”

@TechReport{Lee:07:VEM,
  author      = "Alex Lee and David Burke and Daniel Burnett and Matt Oshry and Scott McGlashan and RJ Auburn and Brandon Porter and Michael Bodell and Kenneth Rehor and Jerry Carter and Paolo Baggia",
  title       = "Voice Extensible Markup Language ({VoiceXML}) {2.1}",
  month       = jun,
  note        = "https://www.w3.org/TR/2007/REC-voicexml21-20070619/",
  year        = "2007",
  bibsource   = "https://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Recommendation",
  institution = "W3C",
}