1. H. C. Gatos, A. F. Witt, M. Lichtensteiger, and C. J. Herman: ASTP Summary Science Report, NASA, Washington, DC, 1977, vol. 1.
2. T.-W. Fu, W. R. Wilcox, and D.J. Larson, Jr.:J. Crystal Growth, 1982, vol. 57, p. 189.
3. E. D. Bourret, J.J. Derby, R. A. Brown, and A.F. Witt: Int. Astro- nautical Federation, Int. Astronautical Congress, 33rd, Paris, France, Sept. 27–Oct. 2, 1982, Paper 82-130.
4. See also other papers in this proceedings.
5. R.G. Pirich:Metall. Trans. A, 1984, vol. 15A, pp. 2139–45.