Reference for “Model Architecture for Voice Browser Systems”

@TechReport{Dahl:99:MAV,
  author      = "D. A. Dahl and Michael K. Brown",
  title       = "Model Architecture for Voice Browser Systems",
  month       = dec,
  note        = "http://www.w3.org/TR/1999/WD-voice-architecture-19991223",
  year        = "1999",
  bibsource   = "http://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Working Draft",
  institution = "W3C",
}