1. F. Talmann, O. Schermann, E. Schroll, G. Hausberger, Geochemical Atlas of the Republic of Austria, Vienna, 1989, p. 21.
2. M. Bidovec, Utilisation of Flood Sediments for the Evaluation of the Geochemical Background and Pollution Status, M.Sc. Thesis work, University of Ljubljana, Faculty of Natural and Technical Sciences, Ljubljana, 1997, p. 25.
3. P. Van Espen, H. Nullens, F. Adams, Nucl. Instr. Meth., 142 (1977) 243.
4. R. D. Giauque, F. S. Goulding, J. M. Jaklevic, R. H. Pehl, Anal. Chem., 45 (1973) 671.
5. R. D. Giauque, R. B. Garrett, L. Y. Goda, Anal. Chem., 51 (1979) 511.