1. Amadi AN, Okunlola IA, Eze CJ, Jimoh MO, Unuevho CI, Fahad A (2015) Geotechnical assessment of clay deposits in minna, north-central nigeria for use as liners in sanitary landfill design and construction. Am J Environ Prot 3(3):67–75
2. Blight GE (1997) Origin and formation of residual soils. Mechanics of residual soils. Balkema, Rotterdam.
3. British Standard Institute (1990) BS 1377. Methods of test for Soil for civil engineering purposes. Part 2: classification tests
4. Bujang BK, Huat GSS, Faisal HA (2004) Tropical residual soils engineering. Balkema Publishers, London, AA
5. Jamalludin D, Ahmad F, Abidin RZ (2014) Characteristics of soil taken from slope failures in sedimentary and granitic residual soils. Int J Civ Environ Eng IJCEE-IJENS 14(06):31–37