TY  - RPRT
TI  - Two-photon absorption of nonclassical light.
AU  - J Gea-Banacloche
PY  - 1989
DO  - 10.1103/physrevlett.62.1603
UR  - https://pubmed.ncbi.nlm.nih.gov/10039717/
ID  - 10039717
ER  -