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2. P. E. Cavanagh: Private communication.
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4. W. Hume-Rothery, G. V. Raynor, and A. T. Little: On the Carbide and Nitride Particles in Titanium Steels. Journal Iron and Steel Institute, 1942, vol. 145, pp. 127–141.
5. T. Rosenqvist: Institute of Metallurgy, Technical University of Norway, Trondheim, private communication.