1. L. I. Mandel’shtam, Lectures on Optics, Relativity Theory, and Quantum Mechanics (Nauka, Moscow, 1972) [in Russian].
2. V. G. Veselago, Usp. Fiz. Nauk 92, 517 (1967) [Sov. Phys. Usp. 10, 509 (1968)]; Zh. Éksp. Teor. Fiz. 52, 1025 (1966) [Sov. Phys. JETP 25, 680 (1966)].
3. V. M. Agranovich and Yu. N. Gartshteĭn, Usp. Fiz. Nauk 176, 1051 (2006) [Phys. Usp. 49, 1029 (2006)].
4. L. D. Landau and E. M. Lifshitz, Course of Theoretical Physics, Vol. 8: Electrodynamics of Continuous Media, 2nd ed. (Nauka, Moscow, 1982; Pergamon, Oxford, 1984).
5. G. D. Malyuzhinets, Zh. Tekh. Fiz. 21, 940 (1951); V. E. Pafomov, Zh. Éksp. Teor. Fiz. 36, 1853 (1959) [Sov. Phys. JETP 9, 1321 (1959)].