1. ASTM (2018) Standard test method for standard penetration test (SPT) and split-barrel sampling of soils. In: W.C.P. ASTM International (W.C.P. ASTM International), D1586/D1586M–18
2. ASTM (2004) Standard test method for consolidated undrained triaxial compression test for cohesive soils, D 4767–04
3. Bintanja R, Van de Wal R (2008) North American ice-sheet dynamics and the onset of 100,000-year glacial cycles. Nature 454(7206):869–872
4. BSI (1990a) Methods of test for Soils for civil engineering purposes—Part 6: Consolidation and permeability tests in hydraulic cells and with pore pressure measurement, BS 1377–6. BSI London, UK
5. BSI (1990c) Soils for Civil Engineering Purposes—Part 2: Classification, BS 1377–2. BSI London, UK