Silva, Ademar Barros da, Mauro Resende, Antonio Raimundo de Sousa, and Elias Margolis. 1999. “Soil Mobilization, Erosion and Corn and Bean Yields in a Regosol on the Pernambuco State Dry Area”. Pesquisa Agropecuaria Brasileira 34 (2):299-307. https://doi.org/10.1590/S1678-3921.pab1999.v34.5167.