%0 Journal Article %A V. Yu. Muchkaev %A A. P. Onishchenko %A V. A. Tsarev %T Generation of double-frequency radiation in monotron with three-gap cavity %J Izvestiya VUZ. Applied Nonlinear Dynamics %D 2021 %P 915-926 %V 29 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVP_2021_29_6_a7/ %G ru %F IVP_2021_29_6_a7