%0 Journal Article %A A. G. Rozhnev %A M. M. Melnikova %A N. M. Ryskin %T Spectral approach with iterative clarification of a radiation boundary conditions for modeling of quasimodes of a gyrotrons open cavities %J Izvestiya VUZ. Applied Nonlinear Dynamics %D 2024 %P 305-331 %V 32 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVP_2024_32_3_a2/ %G ru %F IVP_2024_32_3_a2