@article{articleb6b84971,
title   = {Composite depth of cure obtained with QTH and LED units assessed by microhardness and micro-Raman spectroscopy},
author = {Santos, G. B and Medeiros, Igor Studart and Fellows, C. E and Muench, Antonio and Braga, Roberto Ruggiero},
year = {2007},
journal   = {Operative Dentistry}
}