1. Allen RG, Pereira LS, Raes D, Smith M (1998) Crop evapotranspiration: guidelines for computing crop water requirements. Food and Agric Org of the UN, Irrigation and drainage, 1998, Report 56
2. Anderson MG, Kneale PE (1980) Pore water pressure and stability conditions on a motorway embankment. Earth Surf Process 5:37–46
3. Anderson MG, Kneale PE (1982) The influence of shrinkage cracks on pore pressures within a clay embankment. Q J Eng Geol 15:9–14
4. British Standard Institute (1990) BS 1377-4: Methods of test for Soils of civil engineering purposes Part 4: Compaction-related tests, BSI, Milton Keynes
5. British Standard Institute (1990) BS 1377-5: methods of test for soils of civil engineering purposes Part 5: Compressibility, permeability and durability tests, BSI, Milton Keynes