@article{petter_madari_2012,  title={Biochar: Agronomic and environmental potential in Brazilian savannah soils},  volume={16},  ISSN={1415-4366},  url={https://doi.org/10.1590/S1415-43662012000700009},  DOI={10.1590/S1415-43662012000700009},  number={7},  journal={Revista Brasileira de Engenharia Agrícola e Ambiental},  publisher={Unidade Acadêmica de Engenharia Agrícola},  author={Petter, Fabiano A. and Madari, Beata E.},  year={2012},  month={Jul},  pages={761–768} }