@misc{1187226,
  author = {David W Allan},
  title = {Report on NBS Dual Mixer Time Difference system (DMTD) built for time-domain measurements associated with phase 1 of GPS:},
  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.IR.75-827},
  language = {en},
}