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2. V.I. Dobatin and N.F. Anoshkin: in The Science, Technology and Application of Titanium, R. Jaffee and N. Promisel, eds., Pergamon Press, New York, NY, 1970, pp. 57–65.
3. G. Lutjering and A. Gysler: in Titanium Science and Technology, G. Lutjering, U. Zwicker, and W. Bunk, eds., Deutsche Gesellscraft fur Metallkunde e.V., Oberursel, Germany, 1985, vol. 4, pp. 2065–83.
4. A. Stephan, 1873, as documented in: Diffusion in Solids, Liquids, and Gases, 2nd Printing, W. Jost, ed., Academic Press, Inc., New York, NY, 1955, pp. 22–24.
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