@misc{indiciae09ef69f7e30c,
  title = {A precise microwave frequency and time distribution system},
  author = {Macconnell, J. W. and Sydnor, R. L. and Hinshaw, J. T.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19840071640},
  note = {Source identifier: 19840071640}
}