1. G. Binning, H. Rohrer, C. Gerber, E. Weibel: Phys. Rev. Lett. 50, 120 (1983)
2. G. Binning, H. Rohrer: Angew. Chem. Int. Ed. Eng. 26, 606 (1987)
3. Single Charge Tunneling. Coulomb Blockade Phenomena in Nanostructures,ed. by H. Grabert and M.H. Devoret, NATO ASI Series, Series B: Physics, vol. 294 (1992), Plenum Press, NY, London
4. R. Berndt, R. Gaisch, W. Schneider, J. Gimzewski, B. Reihl, R. Schlittler, M. Tschudy: Phys. Rev. Lett. 74, 102 (1995)
5. W.E. Moerner, L. Kador: Phys. Rev. Lett. 62, 2535 (1989)