@misc{indiciae00c9feb13aef,
  title = {Locked oscillator phase modulator, appendix d final report},
  author = {Entwistle, G. S. and Osborne, E. F. and Vaughan, G. R.},
  year = {1964},
  url = {https://ntrs.nasa.gov/citations/19650019539},
  note = {Source identifier: 19650019539}
}