1. B. Feuerbacher, B. Fitton, R.F. Willis (eds.): Photoemission and the Electronic Properties of Surfaces (Wiley, New York 1978)
2. Topics Appl. Phys.;M. Cardona,1978
3. G. Ertl, H. Küppers: Low Energy Electrons and Surface Chemistry (VCH, Weinheim 1985)
4. D.P. Woodruff, T.A. Delchar: Modern Techniques in Surface Science (Cambridge Univ. Press, Cambridge 1986)
5. N.V. Richardson, A.M. Bradshaw: In Electron Spectroscopy?Theory, Techniques and Applications, ed. by C.R. Brundle, A.D. Baker (Academic, New York 1981)