F. Morais, L. A. P. Bacellar, and F. G. Sobreira, “Evaluation of piping erosion susceptibility in gnaissic soils”, S&N, vol. 19, no. 2, Feb. 2008, Accessed: Jan. 10, 2026. [Online]. Available: https://seer.ufu.br/index.php/sociedadenatureza/article/view/9264