1. Agranovich, V.M., Mills, D.L. (Eds.: Surface polaritons. Amsterdam: North-Holland 1986
2. Vucovic, S. (Ed.): Surface waves in plasma and solids. New York: World Scientific 1986
3. Agranovich, V.M., Loudon, R. (Eds.): Surace excitons. New York: Elsevier 1984
4. Halevi, P.: Surf. Sci.78, 64 (1978)
5. Wallis, R.F., Brion, J.J., Burstein, E., Hartstein, A.: Phys. Rev.B9, 3424 (1974)