1. G. R. Cowan and A. H. Holtzman:J Appl. Phys., 1963, vol. 34, pp. 1928–39.
2. A. H. Holtzman and G. R. Cowan: Welding Research Council Bulletin, 1965, no. 104, pp. 1–21.
3. A. H. Holtzman:High Energy Rate Working of Metals. Proceedings of NA TO Advance Study Institute, vol. 2, pp. 489–516, Central Institute for Industrial Research, Oslo, Norway, 1964.
4. W. Klein:Z. Metallic., 1965, vol. 36, pp. 261–67.
5. A. S. Bahrani and B. Crossland:Proc. Inst. Mech. Engrs. London, 1964-65, vol. 179, pp. 3–20.