TY  - RPRT
TI  - Large enhancements in nonlinear generation by external electromagnetic fields.
AU  - GS Agarwal
AU  - SP Tewari
PY  - 1993
DO  - 10.1103/physrevlett.70.1417
UR  - https://pubmed.ncbi.nlm.nih.gov/10053287/
ID  - 10053287
ER  -