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3. G.J. Davies and J.G. Garland, Inter. Mater. Review, 20 (1975), p. 83.
4. F. Matsuda, T. Hashimoto, and T. Senda, Trans. Natl. Res. Inst. Met (JPN), 11 (1) (1969), p. 83.
5. K.E. Easterling, Introduction to Physical Metallurgy of Welding (London: Butterworths, 1983).