1. J.W. Paterson, Metal Speciation Separation and Recovery, Lewis Publishers, Inc, vol 2, 1990, p. 27.
2. A. Warshawsky, in: J.A. Marinsky, Y. Marcus (Eds.), Ion-exchange and Solvent Extraction, vol 8, Marcel Dekker, New York, 1981, p. 229.
3. Solvent Extraction, Membranes, and Ion Exchange in Hydrometallurgical Dilute Metals Separation
4. G. Grossi, L. Cecille, in: L. Cecille, M. Casarci (Eds.), New Separation Chemistry Techniques for Radioactive Waste and Other Specific Applications, 1991, p. 21.
5. J.L. Cortina, A. Warshawsky, in: J.A. Marinsky, Y. Marcus (Eds.), Ion-exchange and Solvent Extraction, vol 13, Marcel Dekker, New York, 1997, p. 195.