@article{article607aa9bb,
title   = {Photoinitiator content in restorative composites: influence on degree of conversion, reaction kinetics, volumetric shrinkage and polymerization stress},
author = {Pfeifer, Carmem S and Ferracane, Jack L. and Sakaguchi, Ronald L. and Braga, Roberto Ruggiero},
year = {2009},
journal   = {American Journal of Dentistry}
}