@misc{indiciae7580a32c5241,
  title = {Progress on 10 Kelvin cryo-cooled sapphire oscillator},
  author = {Wang, Rabi T. and Dick, G. John and Diener, William A.},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20060044362},
  note = {Source identifier: 20060044362}
}