1. W. Johnson, Proceedings of the 3rd International Conference on Mechanical Behaviour of Materials, Cambridge, August, 1979 (Pergamon Press, Oxford, 1980) pp. 167?225.
2. W. Johnson andA. G. Mamalis, Proceedings of the 17th International Machine Tool Design and Research Conference, Birmingham, 1976 (Macmillan, London, 1977) pp. 607?21.
3. M. Cohen (Ed)., Material Science and Engineering: Its Evolution, Practice and Prospects (Special issue) 37 (1979).
4. E. Amini andP. A. Aback,Sheet Met. Ind. 51 (1974) 7.
5. A. K. Green andW. H. Bowyer, Fibre Reinforced Composites, Engineering Apr. (1977), Technical File, No. 40.