1. H. J. McQueen, J. Met., April, 31, 38 (1968).
2. K. P. Rao, R. K. B. Madras, and Y. V. Prasad, Dayton Aluminum, 60, 259, 265 (1984).
3. W. Precth and J. P. Pickens, Metall. Trans. A, 18, 1603–1611 (1987).
4. M. Veki, S. Horie, T. Nakamura, and J. Mech, Work Technol., 11(3), 355–364 (1985).
5. J. T. Staley, “Properties related to fracture toughness,” in: ASTM STP 605, American Soc. for Testing and Mater. (1976).