1. PHYSICAL PROPERTIES OF SOME HIGH-TEMPERATURE REFRACTORY COMPOSITIONS*
2. 2W. F. Hillebrand, and C. E. F. Lundell, Applied Inorganic Analysis , p.446 . John Wiley & Sons, Inc., New York, 1929 . 929 pp.; Ceram. Abstr., 9 [1] 68 (1930).
3. THE SOLUBILITIES OF THE PHOSPHATES OF ZIRCONIUM AND HAFNIUM
4. 4B. S. Hopkins , Chapter 12, p.11 . inChemistry of the Less Familiar Elements , Stipes Publishing Co., Champaign, Ill., 1938 .
5. Determination of Zirconium by Precipitation from Homogeneous Solution