TY  - RPRT
TI  - Symmetry superposition studied by surface second-harmonic generation.
AU  - G Lüpke
AU  - G Marowsky
AU  - R Steinhoff
AU  - A Friedrich
AU  - B Pettinger
AU  - DM Kolb
PY  - 1990
DO  - 10.1103/physrevb.41.6913
UR  - https://pubmed.ncbi.nlm.nih.gov/9992947/
ID  - 9992947
ER  -