1. Amelinckx, S., The Direct Observation of Dislocations (Academic Press, 1964).
2. Dawson, I. M., and Follett, E. A. C., Proc. Roy. Soc., A, 253, 390 (1959).
3. Presland, A. E. B., and Hedley, J. A., J. Nuclear Mat., 10, 99 (1963).
4. Thomas, J. M., in Chemistry and Physics of Carbon, 1 (edit. by Walker, jun., P. L.) (Edward Arnold, 1965).
5. Roscoe, C., and Thomas, J. M., Carbon, 4, 383 (1966).