@article{souza_fontes_gilkes_costa_oliveira_2018,  title={Geochemical Signature of Amazon Tropical Rainforest Soils},  volume={42},  ISSN={0100-0683},  url={https://doi.org/10.1590/18069657rbcs20170192},  DOI={10.1590/18069657rbcs20170192},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Souza, José João Lelis Leal de and Fontes, Maurício Paulo Ferreira and Gilkes, Robert and Costa, Liovando Marciano da and Oliveira, Teogenes Senna de},  year={2018},  pages={e0170192} }