1. D. Tabor: Surf. Sci. 89, 1 (1979)
2. P.H. Abelson: Science 234, 257 (1986)
3. W.A. Grant, R.P.M. Procter, J.L. Whitton (eds.): Surface Modification of Metals by Ion Beams ( Elsevier Sequoia, Lausanne 1987 )
4. J.W. Rabalais, S. Kasi: Science 239, 623 (1988)
5. P. Danielson: In Kirk-Othmer Encyclopedia of Chemical Technology, Vol.20 (Wiley, New York 1982 ) pp. 811, 812