1. K. A. Kraus undF. Nelson, Symposium �ber Ionenaustausch und Chromatographie in der Analytischen Chemie. ASTM Special Technical Publication No. 195. American Society of Testing Materials. Philadelphia, 1958, S. 27 bis 57.
2. K. A. Kraus undF. Nelson, Proc. International Conference on the Peaceful Uses of Atomic Energy. Geneva 1955, Bd. 7, 113, 131. Unit. Nations, 1956.
3. K. A. Kraus, G. E. Moore undF. Nelson, J. Amer. Chem. Soc.78, 2692 (1956).
4. K. A. Kraus, G. E. Moore andF. Nelson, J. Amer. Chem. Soc.77, 3972 (1955).
5. K. A. Kraus undF. Nelson, Ann. Rev. Nuclear Sci.7, 31 (1957).