TY  - RPRT
TI  - Ultranarrow nonlinear optical resonances in solids.
AU  - DG Steel
AU  - SC Rand
PY  - 1985
DO  - 10.1103/physrevlett.55.2285
UR  - https://pubmed.ncbi.nlm.nih.gov/10032101/
ID  - 10032101
ER  -