1. For an overview, see E. N. Economou and C. M. Soukoulis, in: Scattering and Localization of Classical Waves in Random Media, ed. P. Sheng, World Scientific, Singapore (1989).
2. E. N. Economou, Physica A 167, 215 (1990) and references therein.
3. R. Landauer, in: Analogies in Optics and Microelectronics, eds. W. van Haeringen and D. Lenstra, Kluwer, Dordrecht (1990), p. 243.
4. W. van Haeringen and D. Lenstra (eds.), Analogies in Optics and Microelectronics, Kluwer, Dordrecht (1990).
5. R. Landauer, IBM Jl. Res. Dev. 1, 223 (1957);