1. G.N. Goller and W.C. Clarke, Jr.: Iron Age, 1950, vol. 165, pp. 79–83.
2. G.N. Goller and W.C. Clarke, Jr.: Iron Age, 1950, vol. 165, pp. 86–89.
3. H.J. Rack and D. Kalish: Metall. Trans., 1974, vol. 5, pp. 1595–1605.
4. K.C. Antony: J. Metall., 1963, vol. 15, pp. 922–27.
5. U.K. Viswanathan, S. Banerjee, and R. Krishnan: Mater. Sci. Eng., 1988, vol. A104, pp. 181–89.