Borselli L., Torri D., Øygarden L., De Alba S., Martínez-Casasnovas J.A., Bazzoffi P., Jakab G., 2006, Land Levelling, In J. Boardman and J. Poesen (eds) Soil Erosion In Europe. John Willey & Sons Ltd, West Sussex. England pp. 643-658, 2006, ISBN0-470-85920-2, OCLC85785028.