1. S. J. Smith, and E. M. Purcell, Phys. Rev. 92, 1069, 1953.
2. 2. Toraldo di Francia, Nuovo Cimento, 16, 61, 1960.
3. O. A. Tret'yakov, S. S. Tret'yakova, and V. P. Shestopalov, Izv. VUZ. Radiofizika [Soviet Radiophysics], 8, no. 3, 642, 1965.
4. J. V. Jelley, Cerenkov Radiation and its Applications [Russian translation], IL, Moscow, 1960.
5. O. A. Tret'yakov, S. S. Tret'yakova, and V. P. Shestopalov, Third All-Union Symposium on Wave Diffraction, Tbilisi [in Russian], Nauka, Moscow, 1964.