@article{articleda0fcca4,
title   = {Role of cortical and cancellous bone of the vertebral pedicle in implant fixation},
author = {Defino, Helton Luiz Aparecido and Vendrame, José Roberto Benites},
year = {2001},
doi = {10.1007/s005860000232},
journal   = {European Spine Journal}
}