@misc{indiciaee951ee65fdad,
  title = {Four-mode squeezing.},
  author = {BL Schumaker and SH Perlmutter and RM Shelby and MD Levenson},
  year = {1987},
  doi = {10.1103/physrevlett.58.357},
  url = {https://pubmed.ncbi.nlm.nih.gov/10034913/},
  note = {Source identifier: 10034913}
}