@misc{indiciae9a841b766778,
  title = {Highly focused spirally polarized beams.},
  author = {Riccardo Borghi and Massimo Santarsiero and Miguel A Alonso},
  year = {2005},
  doi = {10.1364/josaa.22.001420},
  url = {https://pubmed.ncbi.nlm.nih.gov/16053164/},
  note = {Source identifier: 16053164}
}