%0 Journal Article %A Yu. V. Turovskii %T Spectral properties of elements of normed algebras and invariant subspaces %J Funkcionalʹnyj analiz i ego priloženiâ %D 1984 %P 77-78 %V 18 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1984_18_2_a17/ %G ru %F FAA_1984_18_2_a17