Voloshchuk S. S. RussiaSaratov Saratov State University, ul. Astrakhanskaya, 83, Saratov, 410012, Russia ss.voloshchuk@gmail.com Additional info Author's articles IN THE BACKWARDWAVE OSCILLATOR ON FIRST RESONANCE PEAK INFLUENCE BOTH OF REFLECTIONS AND DISSIPATION OF AMPLITUDE AT THE TRANSIENT BEGINNING NONLINEAR MODEL OF TWO ELECTRON BEAM AND TESTING FOR NONLINEAR NONSTATIONARY THEORY OF TWO-STREAM TRAVELING-WAVE TUBE AMPLIFIER AND TWO-STREAM AMPLIFIER: GENERAL EQUATIONS AND SOME RESULTS OF CALCULATION