1. R. A. Lula:Metal Progress, October 1979, vol. 80, pp. 60–65.
2. E. A. Loria:J. Metals, October 1982, vol. 34, pp. 16–22.
3. V. K. Sikka: Oak Ridge National Laboratory Report 5841, April 1982, 12 pp.
4. S. Danyluk: AISI Project 62-440, 1982.
5. E. A. Loria:J. Metals, June 1979, vol. 31, pp. 137–46.