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2. C. R. Heiple and J. R. Roper:Welding Journal, 1982, vol. 61, p. 97s.
3. C.R. Heiple and J. R. Roper:Trends in Welding Research in the United States, S.A. David, ed., TMS, Metals Park, OH, 1982, p. 489.
4. B.C. Allen: inLiquid Metals— Chemistry and Physics, S.Z. Beer, ed., M. Dekker, Inc., New York, NY, 1972, chap. 4, pp. 161–212.
5. W. H.S. Lawson and H. W. KernWelding Research International, 1976, vol. 6, Paper No. 6.