@misc{indiciae39272faaab6a,
  title = {Squeezing spectra for nonlinear optical systems.},
  author = {MJ Collett and DF Walls},
  year = {1985},
  doi = {10.1103/physreva.32.2887},
  url = {https://pubmed.ncbi.nlm.nih.gov/9896428/},
  note = {Source identifier: 9896428}
}