@misc{1153916,
  author = {J R Andrews},
  title = {Spectrum amplitude ::definition, generation, and measurement},
  year = {1977},
  month = {1977-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.TN.699},
  language = {en},
}