1. See, for example: “Two-Dimensional Systems: Physics and New Devices,” Proc. of International Winter School, Mauterndorf, Austria (February 1986 ); G. Bauer, F. Kuchar, H. Heinrich, eds. (Springer-Verlag, Berlin, 1986 )
2. G.M. Shedd, P.E. Russell: Nanotechnology 1, 67 (1990); R. Wiesendanger: Applied Surface Science 00, 7 (1991)
3. R.W. Keyes: IBM Jour Res and Develop. 32, 24 (1988)
4. J.A. Armstrong: Creativity 10, p 2 (1991)
5. S. Akamine, T.R. Albrecht, M.J. Zdeblick, C.F. Quate: IEEE Electron Device Letters 10, 490 (1989)