@article{oliveira_ferreira_marques_2004,  title={Characterization and classification of two soils derived from basic rocks in Pernambuco State Coast, Northeast Brazil},  volume={61},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90162004000600009},  DOI={10.1590/S0103-90162004000600009},  number={6},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={Oliveira, Lindomário Barros de and Ferreira, Maria da Graça de Vasconcelos Xavier and Marques, Flávio Adriano},  year={2004},  month={Nov},  pages={615–625} }