@misc{indiciae8a3b8f29e371,
  title = {L.O. Limited Frequency Stability for Passive Atomic Frequency Standards},
  author = {Dick, G. J. and Greenhall, C. A.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/20060041408},
  note = {Source identifier: 20060041408}
}