1. M. B. Golant, Z. T. Alekseenko, Z. S. Korotkova, L. A. Lunkina, A. A. Negirev, O. P. Petrova, T. B. Rebrova, V. S. Savel’ev: Pribory i Tekhnika Eksp. 3, 231 (1965)
2. G. Convert, T. Yeou, P. C. Mouton: Proc. 4th Int’l Congr. Microwave Tubes (entrex Publishing, Eindhoven 1963) p. 739
3. E. M. Gershenson, M. B. Golant, A. A. Negirev, V. S. Savel’ev: Backward wave oscillators of millimeter and submillimeter wavelength ranges (Radio and Communication Press, Moscow 1985) [in Russian]
4. R. A. Valitov, S. F. Dubko, V. V. Kamishan, V. M. Kuzmichev, B. M. Makarenko, A. V. Sokolov, V. P. Sheiko: Technique for submillimeter waves (Soviet Radio Press, Moscow 1969) [in Russian]
5. D. H. Martin (ed.): Spectroscopic Techniques for Far-Infrared. Submillimeter, and Millimeter Waves (North-Holland, Amsterdam 1967)