1. L. A. Artsimovich et al., Plasma Physics and Controlled Nuclear Fusion Research, Vol. 1, IAEA, Vienna (1969), p. 157.
2. L. A. Artsimovich, S. V. Mirnov, and V. S. Strelkov, Atomnaya Énergiya,17, 170 (1964).
3. F. G. Lange, Correlation Electronics [in Russian], Sudpromgiz, Leningrad (1963).
4. S. Mirnov, Nucl. Fusion.,9, 51 (1969).
5. N. D. Vinogradova and K. A. Razumova, Plasma Physics and Controlled Nuclear Fusion Research, Vol. 2, IAEA, Vienna (1966), p. 617.