Menezes, M. D. de, Silva, S. H. G., Mello, C. R. de, Owens, P. R., & Curi, N. (2014). Solum depth spatial prediction comparing conventional with knowledge-based digital soil mapping approaches . Scientia Agricola, 71(4), 316-323. https://doi.org/10.1590/0103-9016-2013-0416