REFERENCES
- Mech. World, June 1962, 184–185.
- D. A. S. SARGEANT: personal communication, Royal Naval Engineering College, Manadon, Plymouth, Devon.
- 'Powder diffraction file' 2 edn; 1967, Swarthmore, Pa, Joint Committee on Powder Diffraction Standards.
- F. R. N. NABARRO: Proc. Phys. Soc., 1940, 52, 90–93.
- F. R. N. NABARRO: Proc. R. Soc., 1940, A175, 519–538.
- A. KELLY and R. B. NICHOLSON: Nag. Mater. Set., 1963, 10, 284–288.
- D. HULL: 'Introduction to dislocations', 2 edn, 245; 1975, Oxford, Pergamon Press.