1. Lindholm, U. S., “Some Problems Involved in Testing Materials at High Strain Rates,” Proc. Army Conf. Dynamic Behavior Matls. and Struct., Springfield Armory, Springfield, Mass., Sept. 26–28, 1962.
2. Gerard, G., andPapirno, R., “Dynamic Biaxial Stress-Strain Characteristics of Aluminum and Mild Stell,”Trans. ASM,49,132–148 (1957).
3. Taylor, G. I., andQuinney, H., “The Plastic Distortion of Metals,”Phil. Trans. Roy. Soc. A,230,323–362 (1931);see also The Scientific Papers of G. I. Taylor, Vol. I, Cambridge University Press (1958).