@conference{64656,
  author = {Richard Gann},
  title = {Whence the NGP?},
  year = {2006},
  month = {2006-05-16},
  publisher = {Halon Options Technical Working Conference, Albuquerque, NM},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=100927},
  language = {en},
}