TY  - RPRT
TI  - Multipolar contributions to coherent optical second-harmonic generation at an interface between two isotropic media: A quantum-electrodynamical calculation.
AU  - XD Zhu
AU  - A Wong
PY  - 1992
DO  - 10.1103/physrevb.46.2540
UR  - https://pubmed.ncbi.nlm.nih.gov/10003931/
ID  - 10003931
ER  -