1. M. L. Ter-Mikaelyan, Influence of the Medium on Electromagnetic Processes at High Energies [in Russian], Publishing House of the Academy of Sciences of the Armenian Soviet Socialist Republic, Erevan (1969).
2. G. M. Garibyan and Y. Shi, Zh. Eksp. Teor. Fiz., 61, 930 (1971).
3. V. G. Baryshevskii and I. D. Feranchuk, Zh. Eksp. Teor. Fiz., 61, 944 (1971).
4. V. L. Ginzburg and I. M. Frank, Zh. Eksp. Teor. Fiz., 16, 15 (1946).
5. V. L. Ginzburg and V. N. Tsytovich, Transient Radiation and Transient Scattering [in Russian], Nauka, Moscow (1984).