1. J. Benford, J. A. Swegle, and E. Schamiloglu, High Power Microwaves (CRC Press-Taylor & Francis, London, 2007), pp. 43–97.
2. J. E. Rowe, Proc. IRE 47(4), 536 (1959).
3. J. Caldwell, Traveling Wave Tube (Gosenergoizdat, Moscow, 1959), pp. 105–138 [in Russian].
4. Yu. A. Kalinin, A. M. Kats, and B. V. Pesin, Elektron. Tekh. Ser. 1: Elektron. SVCh, No. 6, 52 (1973).
5. Yu. A. Kalinin and A. M. Kats, Izv. Vyssh. Uchebn. Zaved.: Radioelektron. 23(10), 36 (1980).