@article{campos_giasson_costa_machado_silva_bonfatti_2018,  title={Selection of Environmental Covariates for Classifier Training Applied in Digital Soil Mapping},  volume={42},  ISSN={0100-0683},  url={https://doi.org/10.1590/18069657rbcs20170414},  DOI={10.1590/18069657rbcs20170414},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Campos, Alcinei Ribeiro and Giasson, Elvio and Costa, José Janderson Ferreira and Machado, Israel Rosa and Silva, Elisângela Benedet da and Bonfatti, Benito Roberto},  year={2018},  pages={e0170414} }