1. Laterite soil engineering – pedogenesis and engineering principles;Gidigasu,1976
2. Varghese T, Bygu G. Laterite soils – their distribution, characteristics and management. Technical Monograph No. 1. State Committee on Science Technology and Environment, Government of Kerala, Thiruvananthapuram, India, 1993.
3. Surendran TP. Laterite mining in Kasarkode districts: an engineering appraisal. M. Phil. Dissertation, University of Kerala, Thiruvananthapuram, 2001.
4. Alexander LT, Cady JG. Genesis and hardening of laterite in soils. US Department of Agriculture Technical Bulletin. Paris: UNESCO, Natural Resources Research Services; 1972.
5. Schellmann W. Considerations on the definition and classification of laterites. In: Proceedings of international seminar on laterisation process. Trivandrum, India; 1979. p. 1–10.