1. B. Salbu, B. Steinnes (Eds.), Trace Elements in Natural Waters, CRC Press, Boca Raton, FL, 1995.
2. H.E. Allen, C.P. Huang, G.W. Bailey, A.R. Bowers (Eds.), Metal Speciation and Contamination of Soil, Lewis Publishers, Boca Raton, FL, 1995.
3. Trace element analytical speciation in biological systems: importance, challenges and trends;Sanz Medel;Spectrochim. Acta Part B,1998
4. Biomedical aspects of trace element speciation;Templeton;Fresnius’ J. Anal. Chem.,1999
5. The role of element speciation in environmental and occupational medicine;Apostoli;Fresenius’ J. Anal. Chem.,1999