%0 Journal Article %A S. S. Kalmykova %T Instability of relativistic beam in an open resonator %J Doklady Akademii Nauk %D 1974 %P 814-817 %V 215 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1974_215_4_a12/ %G ru %F DAN_1974_215_4_a12