%0 Journal Article %A A. M. Sedletskii %T The stability of the completeness and minimality in $L^2$ of a~system of exponential functions %J Matematičeskie zametki %D 1974 %P 213-219 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a4/ %G ru %F MZM_1974_15_2_a4