Reference for “Dialog Requirements for Voice Markup Languages”

@TechReport{McGlashan:99:DRV,
  author      = "Scott McGlashan",
  title       = "Dialog Requirements for Voice Markup Languages",
  month       = dec,
  note        = "http://www.w3.org/TR/1999/WD-voice-dialog-reqs-19991223",
  year        = "1999",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}