%0 Journal Article %A Yu. I. Lyubich %T On the spectrum of a representation of an abelian topological group %J Doklady Akademii Nauk %D 1971 %P 777-780 %V 200 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1971_200_4_a6/ %G ru %F DAN_1971_200_4_a6