1. G.A. Somorjai: Chemistry in Two Dimensions: Surfaces (Cornell Univ. Press, Ithaca 1981)
2. M.W. Roberts, C.S. McKee: Chemistry of the Metal-Gas Interface (Clarendon, Oxford 1978)
3. R.J. Madix: CRC Crit. Rev. Solid State Mater. Sci. (USA) 7, 143 (1978)
4. P.K. Ghosh: Introduction to Photoelection Spectroscopy (Wiley, New York 1983)
5. H. Ibach, D.L. Mills: Electron Energy Loss Spectroscopy (Academic, New York, 1982)