@article{articleeb4998bb,
title   = {Learning soil classification with the Kayapó indians},
author = {Cooper, Miguel and Teramoto, E. R. and Vidal Torrado, Pablo and Sparovek, Gerd},
year = {2005},
doi = {10.1590/S0103-90162005000600016},
journal   = {Scientia Agricola}
}