1. G. N. Fursey, Field Emission in Vacuum Micro-Electronics (Springer, New York, 2005).
2. Yu. V. Alekhin, M. P. Apin, A. A. Burtsev, N. A. Bushuev, O. V. Voronkov, Yu. A. Grigor’ev, M. V. Davidovich, A. B. Danilov, V. M. Isaev, I. N. Kabanov, V. P. Kudryashov, P. P. Kuts’ko, V. P. Meshchanov, I. G. Nasenkov, A. D. Rafalovich, et al., Ultra-Wideband Traveling-Wave Tubes. Microwave, EHF, and Terahertz Studies. Manufacturing Application, Ed. by N. A. Bushuev (Radiotekhnika, Moscow, 2016).
3. N. V. Egorov and E. P. Sheshin, Autoelectronic Emission. Principles and Devices (Intellekt, Moscow, 2011).
4. D. I. Proskurovskii, Emission Electronics (Tomsk. Gos. Univ., Tomsk, 2010).
5. A. N. Obraztsov, I. Yu. Pavlovskii, and A. P. Volkov, Tech. Phys. 46, 1437 (2001).