@article{articlec67b487b,
title   = {Effect of preheating on microhardness and viscosity of 4 resin composites},
author = {Ayub, Karen V. and Santos Jr., Gildo C. and Rizkalla, Amin S. and Bohay, Richard and Pegoraro, Luiz Fernando and Rubo, José Henrique and Santos, Jacinta M. C.},
year = {2014},
journal   = {Journal of the Canadian Dental Association}
}