1. W. Kaim and B.Schwedeski , in Bioinorganic Chemistry: Inorganic Elements in the Chemistry of Life , John Wiley and Sons , New York , 1994
2. Perspectives on Bioinorganic Chemistry , ed. R. W. Hay , J. R. Dilworth and K. B. Nolan , JAI Press , London , 1991
3. Metal Ions in Biological Systems , ed. H. Sigel , Marcel Dekker , New York , 1973
4. Vanadium: A Biologically Relevant Element