1. Busev, A. I., Tiptsova, V. G. and Ivanov, V. M. 1978.Analytical Chemistry of Rare Elements157Moscow: Mir Publishers.
2. Sharpe, A. G. 1986.Inorganic Chemistry623Singapore: Longman Group Ltd.
3. Bailer, J. C., Emeleus, H. G., Nyholm, R. and Trotman-Dickenson, A. F. 1975.Comprehensive Inorganic Chemistry419New York: Pergamon Press.
4. Flow analysis of silicate rocks for zirconium
5. Determination of Thorium, Uranium and Zirconium with Arsenazo III Using Third-Order Derivative Spectrophotometry.