%0 Journal Article %A V. K. Apal'kov %A V. P. Mitrofanov %A V. S. Shiyan %T Investigation of the frequency stability of autogenerator with sapphire resonator %J Doklady Akademii Nauk %D 1978 %P 578-580 %V 242 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1978_242_3_a19/ %G ru %F DAN_1978_242_3_a19