@misc{18791,
  author = {Michael Lombardi and Glenn Nelson},
  title = {WWVB: A Half Century of Delivering Accurate Frequency and Time by Radio},
  year = {2014},
  month = {2014-03-12},
  publisher = {Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/jres.119.004},
  language = {en},
}