@article{machado_silva_filho_pfeil_lima_lopes_2015,  title={3D investigation of steel fiber distribution in reinforced concrete by X-ray microtomography},  volume={8},  ISSN={1983-4195},  url={https://doi.org/10.1590/S1983-41952015000500008},  DOI={10.1590/S1983-41952015000500008},  number={5},  journal={Revista IBRACON de Estruturas e Materiais},  publisher={IBRACON - Instituto Brasileiro do Concreto},  author={MACHADO, A. C. and SILVA, M. A. and FILHO, R. D. T. and PFEIL, M. S. and LIMA, I. and LOPES, R. T.},  year={2015},  month={Oct},  pages={707–720} }