Internal Erosion in Earthdams, Dikes and Levees Proceedings of EWG‐IE 26th Annual Meeting 2018 - Bonelli, Stéphane; Bonelli, Stéphane; Jommi, Cristina; Jommi, Cristina; Sterpi, Donatella; Sterpi, Donatella (Springer International Publishing : Imprint: Springer, 2019)