@misc{1200501,
  author = {Karen Hansen Lichtfuss},
  title = {NIST time and frequency bulletin:},
  year = {2015},
  month = {2015-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.8044-08},
  language = {en},
}