TY  - RPRT
TI  - Envelope-function approach for the electrodynamics of nonlinear periodic structures.
AU  - de Sterke CM
AU  - JE Sipe
PY  - 1988
DO  - 10.1103/physreva.38.5149
UR  - https://pubmed.ncbi.nlm.nih.gov/9900235/
ID  - 9900235
ER  -