TY  - RPRT
TI  - Simple model of second-harmonic generation.
AU  - WL Schaich
AU  - BS Mendoza
PY  - 1992
DO  - 10.1103/physrevb.45.14279
UR  - https://pubmed.ncbi.nlm.nih.gov/10001554/
ID  - 10001554
ER  -