@misc{20486,
  author = {Petrina Potts},
  title = {NIST Time and Frequency Bulletin},
  year = {2013},
  month = {2013-01-18},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.1149-01},
  language = {en},
}