1. Friedbacher G, Fuchs H (1999) Pure Appl Chem 71:1337
2. Friedbacher G, Fuchs H (2003) Angew Chem 115:5804
3. Moffat TP (1999) In: Bard AJ, Rubinstein I (eds) Electroanalytical chemistry 21. Marcel Dekker, New York, p 211
4. Bonnel DA (ed) (1993) Tunneling microscopy and spectroscopy. VCH, New York
5. Legett G (1997) In: Vickerman JC (ed) Surface analysis – the principal techniques. Wiley, Chichester, p 393