TY  - RPRT
TI  - Resonators in quantum optics: A first-principles approach.
AU  - L Knöll
AU  - W Vogel
AU  - D Welsch
PY  - 1991
DO  - 10.1103/physreva.43.543
UR  - https://pubmed.ncbi.nlm.nih.gov/9904808/
ID  - 9904808
ER  -