1. ASTM D3080, D3080M – 11 (2011) Standard test method for direct shear test of soils under consolidated drained condition. ASTM International, West Conshohocken, PA
2. ASTM D2435, D2435M-11 (2011) Standard test methods for one-dimensional consolidation properties of soils using incremental loading. ASTM International, West Conshohocken, PA
3. ASTM D2166, D2166M–16 (2016) Standard test method for unconfined compressive strength of cohesive soil. ASTM International, West Conshohocken, PA
4. Barnes HA (1997) Thixotropy—a review. J Non-Newton Fluid Mech 70(1/2):1–33
5. Burland JB (1990) On the compressibility and shear strength of natural clays. Géotechnique 40(3):329–378