Effects of suffusion on the soil's mechanical behavior: experimental investigations.- The role of seepage flow rate and deviatoric stress on the onset and progression of internal stability in a gap-graded soil.- Effects of void ratio and hydraulic gradient on permeability and suffusion of glacial till cores.- Reliability underseepage assessment of levees incorporating geomorphic features.- Simplified estimation of some main characteristics of pores and constrictions in granular materials.- Numerical and physical modelling of seepage-induced internal erosion around holes on permeable sheet pile.- Collection and analysis of the reactivation data of the historical sand boils in the Po river levees.- Harmonisation of terminology and definitions on soil deformation due to seepage.