1. Surface-Enhanced Raman Scattering, Ed. by R. K. Chang and T. E. Furtak, (Plenum, New York, 1982).
2. M. Moskovits, Rev. Mod. Phys. 57, 783 (1985).
3. D. Richard, P. Roussignol, and C. Flytzanis, Opt. Lett. 10, 511 (1985).
4. V. M. Shalaev and M. I. Stockman, Zh. Éksp. Teor. Fiz. 65, 287 (1987).
5. S. G. Rautian, V. P. Safonov, P. A. Chubakov, et al., Sov. Phys. JETP Lett. 47, 243 (1988).