@article{articlea5a43a97,
title   = {Efficacy of polyanionic collagen matrices for bone defect healing},
author = {Rocha, Lenaldo Branco and Brochi, Marco Aurélio Corte and Bellucci, Ângela Delete and Rossi, Marcos Antônio},
year = {2004},
doi = {10.1002/jbm.b.30102},
journal   = {Journal of Biomedical Materials Research. Part B: Applied Biomaterials}
}