@misc{indiciaedcf41dbeb376,
  title = {Nonclassical effects in phase space.},
  author = {N Lütkenhaus and SM Barnett},
  year = {1995},
  doi = {10.1103/physreva.51.3340},
  url = {https://pubmed.ncbi.nlm.nih.gov/9911974/},
  note = {Source identifier: 9911974}
}