@misc{1157866,
  author = {George M Free},
  title = {Transportable 1000 pF standard for the NBS capacitance measurement assurance program:},
  year = {1982},
  month = {1982-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.1162},
  language = {en},
}