%0 Journal Article %A K. M. Dyakonov %T Smooth functions and co-invariant subspaces of the shift operator %J Algebra i analiz %D 1992 %P 117-147 %V 4 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_1992_4_5_a4/ %G ru %F AA_1992_4_5_a4