TY  - RPRT
TI  - Third-generation vs a second-generation LED curing light: effect on Knoop microhardness.
AU  - Richard B T Price
AU  - Corey A Felix
AU  - Pantelis Andreou
PY  - 2006
UR  - https://pubmed.ncbi.nlm.nih.gov/17052038/
ID  - 17052038
ER  -