@misc{indiciae175aeeb304f9,
  title = {Frequency doubling.},
  author = {R B Marimont},
  year = {1967},
  doi = {10.1364/josa.57.0968\_1},
  url = {https://pubmed.ncbi.nlm.nih.gov/6038014/},
  note = {Source identifier: 6038014}
}