1. On the relative importance of relevance and irrelevance;Birchall J. D.;Chemy Ind. Lond.,1983
2. Boston Consulting Group 1970 Perspectives on experience. Boston Massachusetts: Boston Consulting Group. (See also The experience curve from the economist's perspective. Strategic Management pp. 197-212 (July-September 1985).)
3. Department of Trade and Industry 1985 A programme for the wider application of new and improved materials and processes (nimp). The Report of the Collyear Committee.
4. Fellowship of Engineering 1983 Report on Modern Materials in Manufacturing Industry May 1983.