Peralta, N. R., P. L. Cicore, M. A. Marino, J. R. Marques da Silva, and J. L. Costa. “Use of Geophysical Survey As a Predictor of the Edaphic Properties Variability in Soils Used for Livestock Production”. Spanish Journal of Agricultural Research, Vol. 13, no. 4, Dec. 2015, p. e1103, doi:10.5424/sjar/2015134-8032.