@misc{indiciaeb47ddd9b06e4,
  title = {Quantum theory for light propagation in a nonlinear effective medium.},
  author = {I Abram and E Cohen},
  year = {1991},
  doi = {10.1103/physreva.44.500},
  url = {https://pubmed.ncbi.nlm.nih.gov/9905702/},
  note = {Source identifier: 9905702}
}