1. Ashby, M.F.: Materials Selection in Mechanical Design, 3rd edn. Butterworth-Heinemann, Oxford. (2003 and later versions)
2. Cottrell, A.H.: Discussion Meeting on New Materials held at the Royal Society, 6th and 7th June, 1963. In Proc. Roy. Soc. London. A282, (1964, 20th October)