@misc{1160951,
  author = {Robert E Nelson},
  title = {A guide to voice scramblers for law enforcement agencies:},
  year = {1976},
  month = {1976-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.SP.480-8},
  language = {en},
}