@misc{ rfc3864,
  author = {Graham Klyne and Mark Nottingham and Jeffrey C. Mogul},
  title = {Registration Procedures for Message Header Fields},
  howpublished = {Internet RFC 3864},
  month = {September},
  year = {2004},
  topic = {http[0.9] smtp[0.9] mime[0.9] usenetnews[0.9]},
  abstract = {This specification defines registration procedures for the message header fields used by Internet mail, HTTP, Netnews and other applications.}
}