M. A. C. de Sá, J. M. de Lima, N. Curi, J. A. Massaroto, and J. J. G. de S. e M. Marques, “Estimating soil erodibility from sonication indexes and other attributes of textural B horizon soils”, PAB, vol. 39, no. 7, pp. 691–699, Jul. 2004, doi: 10.1590/S1678-3921.pab2004.v39.6827.