1. Aberfan Tribunal, 1969. Report. HMSO, London.
2. AGS, 2004. Transfer of Geotechnical and Geoenvironmental Data Edition 3.1. AGS, Beckenham. http://www.ags.org.uk/publications/.
3. AGS, 2006. A Client’s Guide to Desk Studies. AGS, Beckenham. http://www.ags.org.uk/site/clientsguides/.
4. AIME, 1929. Geology and Engineering for Dams and Reservoirs. American Institute of Mining and Metallurgical Engineers, Technical Publications, 215.
5. Anderson J.C.C. Trigg C.F. 1976. Case-Histories in Engineering Geology. Elek Science, London.