1. Collapsibility of Egyptian loess soil. unsaturated soils for Asia;Abdrabbo,2000
2. Engineering properties of loess in Libya;Assallay;Journal of Arid Environment,1996
3. Evaluation and control of collapsible soils;Basma;Journal of Geotechnical Engineering Division, ASCE,1992
4. Engineering Properties of Soils and Rocks;Bell,1992
5. Bs 1377: British Standards Methods of test for soils for civil engineering purposes;British Standards Institution,1990