@misc{indiciaeb4a5d113635f,
  title = {First-order optical systems with unimodular eigenvalues.},
  author = {Martin J Bastiaans and Tatiana Alieva},
  year = {2006},
  doi = {10.1364/josaa.23.001875},
  url = {https://pubmed.ncbi.nlm.nih.gov/16835644/},
  note = {Source identifier: 16835644}
}