@misc{indiciae229806b3e6cc,
  title = {A Resonator for Low-Threshold Frequency Conversion},
  author = {Iltchenko, Vladimir and Matsko, Andrey and Savchenkov, Anatoliy and Maleki, Lute},
  year = {2004},
  url = {https://ntrs.nasa.gov/citations/20110020453},
  note = {Source identifier: 20110020453}
}