@misc{indiciaed50187872aa6,
  title = {Nonperturbative approach to multimode photodetection.},
  author = {M Fleischhauer and DG Welsch},
  year = {1991},
  doi = {10.1103/physreva.44.747},
  url = {https://pubmed.ncbi.nlm.nih.gov/9905725/},
  note = {Source identifier: 9905725}
}