@article{article82683b33,
title   = {Contraction stress of flowable composite materials and their efficacy as stress-relieving layers},
author = {Braga, Roberto Ruggiero and Hilton, Thomas J. and Ferracane, Jack L.},
year = {2003},
doi = {10.14219/jada.archive.2003.0258},
journal   = {The Journal of the American Dental Association}
}