@misc{indiciae3ed25f8690db,
  title = {Graded-Index "Whispering-Gallery" Optical Microresonators},
  author = {Savchenkov, Anatoliy and Maleki, Lute and Iltchenko, Vladimir and Matsko, Andrey},
  year = {2006},
  url = {https://ntrs.nasa.gov/citations/20100025717},
  note = {Source identifier: 20100025717}
}