TY  - RPRT
TI  - Photon-number distributions for quantum fields generated in nonlinear optical processes.
AU  - GS Agarwal
AU  - G Adam
PY  - 1988
DO  - 10.1103/physreva.38.750
UR  - https://pubmed.ncbi.nlm.nih.gov/9900437/
ID  - 9900437
ER  -