1. G. A. Askar’yan, Sov. Phys. JETP 15, 943 (1962).
2. V. L. Ginzburg and V. N. Tsytovich, Transition Radiation and Transition Scattering (Nauka, Moscow, 1984; Adam Hilger, Bristol, 1990), Chaps. 1–3.
3. L. M. Gorbunov and V. I. Kirsanov, Sov. Phys. JETP 66(2), 290 (1987).
4. H. Hamster, A. Sullivan, S. Gordon, W. White, and R. W. Falcone, Phys. Rev. Lett. 71, 2725 (1993).
5. N. Yugami, T. Higashiguchi, H. Gao, S. Sakai, K. Takahashi, H. Ito, Y. Nishida, and T. Katsouleas, Phys. Rev. Lett. 89, 065003 (2002).