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3. W. H. Sutton:Whisker Technology, 1st ed., p. 273, Wiley Interscience, N. Y., 1970.
4. A. P. Levitt:Whisker Technology, 1st ed., p. 245. Wiley Interscience, N. Y., 1970
5. R. L. Mehan:Metal Matrix Composites, p. 29, STP 438, ASTM, 1968.