@misc{indiciaeed58993b1bf6,
  title = {Tunable Microwave Cavity For Ion Source},
  author = {Nakanishi, Shigeo and Calco, Frank S. and Scarpelli, August R.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19880000514},
  note = {Source identifier: 19880000514}
}