@misc{indiciae39777ffff6f5,
  title = {Folded cavity design for a ruby resonator},
  author = {Arunkumar, K. A. and Trolinger, James D.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19880062632},
  note = {Source identifier: 19880062632}
}