1. ICOLD: Internal erosion of existing dams, levees and dikes, and their foundations. Jean-Jacques Fry & Rodney Bridle - Bulletin n. 164, vol. 1: “Internal erosion processes and engineering assessment”, Vol. 2: Case histories, investigations, testing, remediation and surveillance” (2017)
2. Terzaghi, K.: Theoretical Soil Mechanics. Wiley, Hoboken (1943)
3. Foster, M., Fell, R.: Assessing embankment dam filters that do not satisfy design criteria. J. Geotech. Geoenviron. Eng. 127(5), 398–407 (2001)
4. Sherard, J.L., Dunnigan, L.P.: Critical filter for impervious soils. J. Geotech. Eng. 115(7), 546–566 (1989)
5. Wan, C.F., Fell, R.: Investigation of internal erosion by the process of suffusion in embankment dams and their foundations. In: Fell, R., Fry, J.J. (eds.) Internal Erosion of Dams and their Foundations. Taylor & Francis Group, London (2007). ISBN:978-0-415