1. Omotoso, O.A., Mamodu, M.O., Ojo, O.J.: Evaluation of geotechnical properties of laterite soils in Asa-Dam are, Ilorin, southwest Nigeria. World J. Appl. Sci. Technol. 3(2), 1–9 (2011)
2. Arora, K.R.: Introductory Soil Engineering: Text Book. Nem Chand Jain (Prop), Standard Publishers Distributors, Nai Sarak, Delhi (1988)
3. Murthy, S.: Geotechnical Engineering: Principles and Practices of Soil Mechanics, 2nd edn. Taylor & Francis, CRC Press, UK (2008)
4. Mollahasani, A., Alavi, A.H., Gandomi, A.H., Rashed, A.: Nonlinear neural-based modeling of soil cohesion intercept. KSCE J. Civ. Eng. 15(5), 831–840 (2010)
5. El-Maksoud, M.A.F.: Laboratory determining of soil strength parameters in calcareous soils and their effect on chiseling draft prediction. In: Proceedings of the Energy Efficiency and Agricultural Engineering—International Conference, Rousse, Bulgaria (2006)