@article{guimarães_tormena_alves_fidalski_blainski_2009,  title={Tensile strength, friability and organic carbon in an oxisol under a crop-livestock system},  volume={66},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90162009000400011},  DOI={10.1590/S0103-90162009000400011},  number={4},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={Guimarães, Rachel Muylaert Locks and Tormena, Cássio Antonio and Alves, Sérgio José and Fidalski, Jonez and Blainski, Éverton},  year={2009},  month={Jul},  pages={499–505} }