@misc{indiciae5bdc4d53b2a2,
  title = {Composite oscillator systems for meeting user needs for time and frequency},
  author = {Stein, S. R. and Walls, F. L.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19790016562},
  note = {Source identifier: 19790016562}
}