Motta, Paulo Emilio Ferreira da, et al. “Soil-Geomorphic Surface Relationships and Landscape Evolution in an Area of the Brazilian Central Plateau”. Pesquisa Agropecuaria Brasileira, vol. 37, no. 6, June 2002, pp. 869-78, doi:10.1590/S1678-3921.pab2002.v37.6413.