@misc{indiciaedca433b22ea6,
  title = {Wigner function for nonparaxial wave fields.},
  author = {C J Sheppard and K G Larkin},
  year = {2001},
  doi = {10.1364/josaa.18.002486},
  url = {https://pubmed.ncbi.nlm.nih.gov/11583265/},
  note = {Source identifier: 11583265}
}