TY  - RPRT
TI  - Optical absorption and emission in simple systems: Beyond the rotating-wave approximation.
AU  - A D'Andrea
PY  - 1989
DO  - 10.1103/physreva.39.5143
UR  - https://pubmed.ncbi.nlm.nih.gov/9901080/
ID  - 9901080
ER  -