1. Surface Polaritons: Electromagnetic Waves at Surfaces and Interfaces, Ed. by V. M. Agranovich and D. L. Mills (North-Holland, Amsterdam, 1982; Nauka, Moscow, 1985).
2. V. N. Lyubimov and D. G. Sannikov, Fiz. Tverd. Tela (Leningrad) 14(3), 675 (1972) [Sov. Phys. Solid State 14, 575 (1972)].
3. V. V. Bryskin, D. N. Mirlin, and Yu. A. Firsov, Usp. Fiz. Nauk 113(1), 29 (1974) [Sov. Phys. Usp. 17, 305 (1974)].
4. V. M. Agranovich, Usp. Fiz. Nauk 115(2), 199 (1975) [Sov. Phys. Usp. 18, 99 (1975)]; Usp. Fiz. Nauk 126 (4), 677 (1978) [Sov. Phys. Usp. 21, 995 (1978)].
5. G. A. Puchkovskaya, V. L. Strizhevskii, Yu. A. Frolkov, et al., Phys. Status Solidi B 89(1), 27 (1978).