1. M. L. Ter-Mikaelyan, Impact of Environment on Electromagnetic Processes at High Energies (Yerevan, 1969) [in Russian].
2. G. M. Garibyan and Yan Shi, Sov. Phys. JETP 61, 930 (1971).
3. V. G. Baryshevskii and I. D. Feranchuk, Sov. Phys. JETP 61, 944 (1971).
4. V. L. Ginzburg and I. M. Frank, Sov. Phys. JETP 16, 15 (1946).
5. V. L. Ginzburg and V. N. Tsytovich, Transition Radiation and Transition Scattering (Nauka, Moscow, 1984).