1. Gyrotron Oscillators: Their Principles and Practice, edited by Edgcombe, C. J. (Taylor & Francis, London, 1993).
2. M. V. Kartikeyan, E. Borie, and M. K. Thumm, Gyrotrons-High Power Microwave and Millimeter Wave Technology, (Springer-Verlag, Berlin, Germany, 2004).
3. G. S. Nusinovich, Introduction to the Physics of Gyrotrons, (The Johns Hopkins University Press, Baltimore – London, 2004).
4. D. V. Kisel, G. S. Korablev, V. G. Pavelyev, M. I. Petelin, and Sh. E. Tsimring, Radio Eng. Elecron. Phys., 19, 95 (1974).
5. O. Dumbrajs, T. Idehara, Y. Iwata, S. Mitsudo, I. Ogawa, and B. Piosczyk, “Hysteresis-like effects in gyrotronoscillators,” Phys. Plasmas (letters) 10, 1183–1186 (2003).