1. P. W. Bridgman, 1931. The Physics of High Pressure, G. Bell, London.
2. H. L. D. Pugh, 1969. ‘Hydrostatic extrusion’, N.E.L. Rept., No. 416.
3. H. LL. D. Pugh, 1969. ‘Hydrostatic extrusion’, 9th Commonwealth Mining and Met. Congr., London.
4. B. I. Beresnev, L. F. Vere Shchagin, Yu. N. Riabin and L. D. Livshits, 1963. Some Problems of Large Plastic Deformation of Metals at High Pressures, Pergamon Press, Oxford.
5. D. Green, 1964–5. ‘An experimental high-speed machine for the practical exploitation of hydrostatic extrusion’, J. Inst. Metals, 93, 65.