TY  - RPRT
TI  - Quantum theory for light propagation in a nonlinear effective medium.
AU  - I Abram
AU  - E Cohen
PY  - 1991
DO  - 10.1103/physreva.44.500
UR  - https://pubmed.ncbi.nlm.nih.gov/9905702/
ID  - 9905702
ER  -