TY  - RPRT
TI  - Nonperturbative approach to multimode photodetection.
AU  - M Fleischhauer
AU  - DG Welsch
PY  - 1991
DO  - 10.1103/physreva.44.747
UR  - https://pubmed.ncbi.nlm.nih.gov/9905725/
ID  - 9905725
ER  -