1. D. M. R. Taplin, P. Rama Rao, and V. V. P. K. Rao, Proceedings of Indian Institute of Metals Symposium on Recent Developments in Metallurgical Science and Technology, New Delhi (1972).
2. K. T. Aust, Proceedings of Conference on Interfaces, Ed. R. C. Gifkins (Butterworths, London, 1969) p. 295.
3. R. L. Bell and T. G. Langdon, ibid p. 115.
4. D. M. R. Taplin, Met. Eng. Quart. 10 (1970) 795.
5. K. V. Snowden, Phil. Mag. 6 (1961) 321.