%0 Journal Article %A N. K. Nikol'skii %T Unicellularity and non-unicellularity of weighted shift operators %J Doklady Akademii Nauk %D 1967 %P 287-290 %V 172 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_172_2_a9/ %G ru %F DAN_1967_172_2_a9