@misc{indiciaecf661fdfed51,
  title = {Envelope-function approach for the electrodynamics of nonlinear periodic structures.},
  author = {de Sterke CM and JE Sipe},
  year = {1988},
  doi = {10.1103/physreva.38.5149},
  url = {https://pubmed.ncbi.nlm.nih.gov/9900235/},
  note = {Source identifier: 9900235}
}