TY  - RPRT
TI  - Second-harmonic generation in graded metallic films.
AU  - J P Huang
AU  - K W Yu
PY  - 2005
DO  - 10.1364/ol.30.000275
UR  - https://pubmed.ncbi.nlm.nih.gov/15751883/
ID  - 15751883
ER  -