1. E. Lassner and W.-D. Schubert, Tungsten—Properties, Chemistry, Technology of the Element, Alloys, and Chemical Compounds (New York: Kluwer Academic/Plenum Publishers, 1999).
2. C.L. Briant, Adv. Materials & Processes, 154 (1998), pp. 29–33.
3. G. Eichelbronner. Int. J. Ref. Metals & Hard Mat., 16 (1988) pp. 5–11.
4. R.P. Singh Gaur et al., “Electrochemical Displacement-Deposition Method for Making Composite Metal Powders,” U.S. patent 7,041,151 (9 May 2006).
5. O.A. Songina, editor, Rare Earths Third Edition (Translated from Russian) (Jerusalem, Israel Program for Scientific Translation, 1970), pp. 15–71.