Y. C. Cambronero, C. M. B. de F. Maia, R. A. Dedecek, and F. A. Hansel, “Water repellency of sandy soil as a function of hydrophobic concentration”, Pesq. flor. bras., vol. 31, no. 65, p. 01, Mar. 2011, doi: 10.4336/2011.pfb.31.65.01.