1. Adamson, R. J. (ed.) in Gold Metallurgy in South Africa 191 (Cape Town, Chamber of Mines S. Africa, 1972).
2. Forty, A. J. in Sir Charles Frank, OBE, FRS: An Eightieth Birthday Tribute (eds Chambers, R. G. et al.) 164-187 (Hilger, Bristol, 1991).
3. Wang, J., Jiang, X. & Li, S. Chinese Sci. Bull. 42, 1135–1139 (1997).
4. Bocquet, J. L., Brébec, G. & Limoge, Y. in Physical Metallurgy4th edn (eds Cahn, R. W. & Haasen, P.) 537-668 (Elsevier, Amsterdam, 1996).
5. Ramstetter, R., Lampert, G., Seeger, A. & Schüle, W. Phys. Status Solidi 8, 863 (1965).