@misc{indiciaea4841ebcf2b4,
  title = {Puri's criterion and higher-order squeezing.},
  author = {R Lynch and HA Mavromatis},
  year = {1995},
  doi = {10.1103/physreva.52.55},
  url = {https://pubmed.ncbi.nlm.nih.gov/9912220/},
  note = {Source identifier: 9912220}
}