@misc{indiciae92f24bae1481,
  title = {Nonlinear complex eikonal approximation: Optical bistability in absorbing media.},
  author = {M Orenstein and J Katriel and S Speiser},
  year = {1987},
  doi = {10.1103/physreva.35.1192},
  url = {https://pubmed.ncbi.nlm.nih.gov/9898260/},
  note = {Source identifier: 9898260}
}