Souza, R. T. de; Heredia, O. S.; Travassos, L. E. P.; Velásquez, L. N. M.; Sampaio, J. L. D. Influence of Soil Layer Thickness on Karst Aquifers Protection in Humid and Mediterranean Climates by the COP Vulnerability Method. R. Águas Subter. 2020, 34, 50-65.