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2. K. J. BATHE, Report 82448-1, Massachusetts Institute of Technology, Cambridge, Massachusetts (1978).
3. T. R. BUTKOVICH, J. L. YOW Jr and D. N. MONTAN, in Proceedings of the International Conference on Radioactive Waste Management, Winnipeg, Canada, 1982, edited by M. A. Feraday, p. 131.
4. H. KAMIZONO, unpublished data.
5. H. MITAMURA, M. SENOO, S. TASHIRO, T. BANBA and H. AMANO, JAERI-M 8573, Japan Atomic Energy Research Institute (1979).