Chaves, Iêde de Brito, Octavio Freire, and Malaquias da Silva Amorim Neto. 2014. “Rainfall Characteristics and Erosion Risk in the Brazilian Semi-A, D Tropical Region”. Pesquisa Agropecuaria Brasileira 20 (9):991-98. https://doi.org/10.1590/S1678-3921.pab1985.v20.16148.