1. Betteridge, W. and Heslop, J. (1977) The Nimonic Alloys and Other Nickel- base High-temperature Alloys, 2nd edn, Chap. 10, Edward Arnold, London.
2. Breakwell, P. R., Boxall, J. R. and Webster, G. A. (1983) Specimen manufacture. Proceedings, Measurement of High Temperature Mechanical Properties of Materials, M. S. Loveday, M. F. Day and B. F. Dyson (Eds), Chap. 20, HMSO, London, pp. 322–40.
3. Bressers, J. (1983) Axiality of loading, ibid, Ch. 17, pp. 279–95.
4. Brown, G. M. (1970) A.small strain tension-torsion extensometer. Rev. Sci. Instrum.41 (3), 387–9.
5. Christ, B. W. and Swanson, S. R. (1976) Alignment problems in the tensile test. J. Testing and Evaluation, 4, 405–17.