@article{oliveira jr._martins_de milito_2004,  title={Analysis of concrete material through gamma ray computerized tomography},  volume={34},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332004000500086},  DOI={10.1590/S0103-97332004000500086},  number={3a},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Oliveira Jr., J. M. de and Martins, A. C. G. and DE Milito, J. A.},  year={2004},  month={Sep},  pages={1020–1023} }