“Direct-Action Accelerator Based on the Magnetron Gun With a Secondary-Emission Cathode and Iits Aplication in Radio-Technologies”, East Eur. J. Phys., no. 1017(3), pp. 85–89, Sep. 2012, Accessed: Oct. 24, 2026. Available: https://periodicals.karazin.ua/eejp/article/view/13704