1. Mellors, G.W., and S. Senderoff. J. Electrochem. Soc.113 (1): 60. 1966.
2. Steinberg, M.A., M.E. Sibert, and E. Wainer. Zirconium and Zirconium Alloys. Am. Soc. Metals, Cleveland, 1953.pp. 37-72.
3. Wong, M.M., J.M. Hiegel, and G.M. Martinez. Electrolytes for Electro-refining Hafnium. U.S. Dept. Interior, Bur. Mines, Report 6818,1966.