1. G. J. LEWIS, D. M. PARKIN, and F. A. THOMPSON: in ‘Forging and properties of aerospace materials’, 399; 1978, London, The Metals Society.
2. F. A. THOMPSON, G. I. LEWIS, and D. L. WILLIAMS: in ft:7C. 5th European Symp. on `Powder metallurgy', 240; 1978, Stockholm, Jemkontoret.
3. N. M. ALLEN, R. L. ATHEY, and J. B. MOORE: in ‘Progress in powder metallurgy’, (ed. G. D. Smith), Vol. 31,243; 1975, Princeton, NJ, Metal Powder Industries Federation.
4. J. M. LARSON: in `Modern developments in powder metallurgy', (ed. H. H. Hausner and W. E. Smith), Vol. 8, 537; 1974, Princeton, NJ, Metal Powder Industries Federation.