%0 Journal Article %A A. M. Bikchentaev %T Projection-Convex Combinations in $C^*$-Algebras and the Invariant Subspace Problem,~I %J Matematičeskie zametki %D 2006 %P 311-315 %V 79 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2006_79_2_a14/ %G ru %F MZM_2006_79_2_a14