1. V. A. Assman, F. V. Bunkin, E. A. Vinogradov, V. I. Golovanov, G. A. Lyakhov, N. V. Suyazov, and K. F. Shipilov, Pis’ma Zh. Tekh. Fiz. 17(5), 72 (1991). [Sov. Tech. Phys. Lett. 17, 185 (1991)].
2. V. A. Assman, F. V. Bunkin, E. A. Vinogradov, V. I. Golovanov, G. A. Lyakhov, N. V. Suyazov, and K. F. Shipilov, Preprint No. 113, IOF AN SSSR (Moscow, 1990), 29 pp.
3. G. A. Lyakhov, N. V. Suyazov, I. E. Ushakov, and I. F. Shishkin, Pis’ma Zh. Tekh. Fiz. 20(16), 44 (1994) [Tech. Phys. Lett. 20, 665 (1994)].
4. V. A. Syrvachev, I. F. Shishkin, and I. E. Ushakov, Metrologiya, No. 2, 38 (1979).
5. I. E. Ushakov and I. F. Shishkin, in Problems of the Signal Formation and Processing in Radio Electronic Systems (Taganrog Radio Engineering Institute, Taganrog, 1980), Vol. 4, pp. 55–62.