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4. 4) U. Mizutani, Y. Yamada and Y. Ito: Collected Abstracts of 1986 Spring Meeting of Japan Inst. Metals, p. 63; and private communication.
5. 5) H. P. Klug and L. E. Alexander: X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials, John Wiley & Sons, (1974), p. 791.