@misc{indiciae618ddcb71f9b,
  title = {Lissajous singularities.},
  author = {David A Kessler and Isaac Freund},
  year = {2003},
  doi = {10.1364/ol.28.000111},
  url = {https://pubmed.ncbi.nlm.nih.gov/12656501/},
  note = {Source identifier: 12656501}
}