@misc{1181366,
  author = {James R Andrews and Eugene E Baldwin},
  title = {Amplitude calibrator for oscilloscopes:},
  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.IR.81-1646},
  language = {en},
}