@misc{indiciae0a3676203d58,
  title = {Graded-index whispering gallery mode resonators},
  author = {Savchenkov, Anatoliy and Maleki, Lutfollah and Ilchenko, Vladimir and Matsko, Andrey B.},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20080007012},
  note = {Source identifier: 20080007012}
}