@misc{indiciaeebf40a84cfd9,
  title = {Immaterial tip concept by light confinement.},
  author = {T Grosjean and D Courjon},
  year = {2001},
  doi = {10.1046/j.1365-2818.2001.00881.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/11309084/},
  note = {Source identifier: 11309084}
}