1. Carmichael, I. A., Whitley, J. E.: Analyst 94, 737 (1969).
2. Chleck, D.: In: Proceedings of the symposium on radiochemical methods, Salzburg, 1964, Vol. II, p. 237. Vienna: IAEA 1965.
3. —, Maehl, R., Cuechiara, O., Carnevale, E.: Int. J. Appl. Radiat. Isotopes 14, 581, 593, 599 (1963).
4. Frankenthal, R. P.: Equilibrium constants. In: Handbook of analytical chemistry (L. Meites, ed.), p. 1–13. New York: McGraw-Hill Co., Inc. 1963.
5. Krivan, V.: Talanta 16, 1513 (1969).