@misc{1163416,
  author = {L J Kieffer},
  title = {Calibration and related measurement services of the National Bureau of Standards:},
  year = {1981},
  month = {1981-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.250e1980},
  language = {en},
}