@misc{indiciae33d209f3cc42,
  title = {Diffraction-free beams.},
  author = {J Durnin and J Miceli and JH Eberly},
  year = {1987},
  doi = {10.1103/physrevlett.58.1499},
  url = {https://pubmed.ncbi.nlm.nih.gov/10034453/},
  note = {Source identifier: 10034453}
}