1. Rostoker, W.: The Metallurgy of Vanadium. New York: Wiley & Sons 1958.
2. Miller, G. L.: Zirconium. London: Butterworths Scient. Publ. 1957.
3. Lustmann, B.: The Metallurgy of Zirconium. New York: McGraw-Hill 1955.
4. Knapton, A. G.: J. Less-Common Metals 2 (1960) 113.
5. Hildebrand, J. H., U. R. L. Scott: The Solubility of Non-Electrolytes, 3. Aufl. New York: Reinhold 1950.