@misc{indiciae1e5524aeee81,
  title = {Precision tunable resonant microwave cavity},
  author = {Nakanishi, Shigeo and Calco, Frank S. and Scarpelli, August R.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870011801},
  note = {Source identifier: 19870011801}
}