@conference{152731,
  author = {Yi-hua Tang},
  title = {A Direct Josephson Voltage Standard  Comparison between NIST and Lockheed Martin Mission Service},
  year = {2008},
  month = {2008-08-01},
  publisher = {NCSL International Workshop and Symposium, Orlando, FL},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=33003},
  language = {en},
}