@misc{indiciaed028ec8a459f,
  title = {Nonclassical distance in quantum optics.},
  author = {M Hillery},
  year = {1987},
  doi = {10.1103/physreva.35.725},
  url = {https://pubmed.ncbi.nlm.nih.gov/9898196/},
  note = {Source identifier: 9898196}
}