@article{179851,
  author = {Michael Lombardi},
  title = {Time Signal Stations},
  year = {2006},
  number = {15},
  month = {2006-07-01},
  publisher = {Radio Time},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50342},
  language = {en},
}