@misc{indiciaeaa466eea5050,
  title = {Optical vortex coronagraph.},
  author = {Gregory Foo and David M Palacios and Grover A Swartzlander},
  year = {2005},
  doi = {10.1364/ol.30.003308},
  url = {https://pubmed.ncbi.nlm.nih.gov/16389814/},
  note = {Source identifier: 16389814}
}