1. D. de Fontaine:Ultrafine-Grain Metals, J. J. BurRe and V. Weiss, eds., p. 93,Syracuse University Press, N.Y., 1970.
2. E. P. Butler and G. Thomas:Acta Met., 1970, vol. 18, p. 347.
3. M. Bouchard and G. Thomas:Acta Met., 1975, vol. 23, p. 1485.
4. R. Gronsky, M. Okada, R. Sinclair, and G. Thomas:33rd Ann. Proc. of Electron Microscopy Society of America, G. W. Bailey, ed., p. 22, Claitor's Publishing Division, Baton Rouge, La., 1975.
5. R. Sinclair, R. Gronsky, and G. Thomas:Acta Met., 1976, vol. 24, p. 789.