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2. S. P. Bhat, T. R. Ramachandran and A. K. Jena, J. Mater. Sci. 9 (1974) 1759.
3. D. P. Lahiri, T. R. Ramachandran and A. K. Jena, Trans. Ind. Inst. Metals, 27 (1974) 360.
4. T. Federighi, in ?Lattice Defects in Quenched Metals? (Academic Press, New York, 1965) p. 217.
5. H. S. Rosenbaum and D. Turnbull, Acta Met. 6 (1958) 653; 7 (1959) 664.