1. R. Trebino, Frequency Resolved Optical Gating: The Measurement of Ultrashort Pulses (Kluwer Academic Publishers, USA, 2000)
2. M. Wegener, Extreme Nonlinear Optics (Springer, Berlin Heidelberg, 2005)
3. J.D. Jackson, Classical Electrodynamics, 3rd edn. (Wiley, Singapore, 2005)
4. L.D. Landau, L.P. Pitaevskii, E.M. Lifshitz, Electrodynamics of Continuous Media, 3rd edn. (Butterworth-Heineman, Oxford, 2004)
5. D.M. Volkov, Z. Phys. 94, 250 (1935)