@misc{indiciae3c16a4f23601,
  title = {Optical Microresonators in Clocks: Needs and Status},
  author = {Tjoelker, Robert L. and Matsko, Andrey B.},
  year = {2020},
  url = {https://ntrs.nasa.gov/citations/20220000942},
  note = {Source identifier: 20220000942}
}