1. Sigel, A., Sigel, H., Sigel, R.K.O. (eds.): Metal Ions in Life Sciences, vol. 1. Wiley, Chichester (2006)
2. May, P.M., Williams, D.R.: In: Sigel, H. (ed.) Metal Ions in Biological Systems Properties of Copper, vol. 12. Marcel Dekker, New York (1981)
3. Sigel, H. (ed.): Metal Ions in Biological Systems, vol. 13. Marcel Dekker, New York (1981)
4. Miura, T., Hori-J, A., Mototani, H., Takeuchi, H.: Raman spectroscopic study on the copper(II) binding mode of prion octapeptide and its pH dependence. Biochemistry 38, 11560–11569 (1999)
5. Solomon, E.I., Szilagyi, R.K., George, S.D., Basumallick, L.: Electronic structures of metal sites in proteins and models: Contributions to function in blue copper proteins. Chem. Rev. 104, 419–458 (2009)