1. J. D. Jackson, Classical Electrodynamics, 3rd ed. (Wiley, New York, 1998).
2. M. Reed and B. Simon, Scattering Theory, Methods of Modern Mathematical Physics Vol. 3 (Academic Press, 1979).
3. L. D. Landau, E. M. Lifshitz, and L. P. Pitaevskiĭ, Electrodynamics of Continuous Media, 2nd ed. (Robert Maxwell, M.C., 1984), ISBN: 0-08-030275-0.
4. L. Brillouin, Wave Propagation and Group Velocity (Academic Press, Inc., New York, London, 1960).
5. FREQUENCY DISPERSION LIMITS RESOLUTION IN VESELAGO LENS