%0 Journal Article %A Barnes, Bruce A. %T The Commutant of an Abstract Backward Shift %J Canadian mathematical bulletin %D 2000 %P 21-24 %V 43 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2000-003-9/ %R 10.4153/CMB-2000-003-9 %F 10_4153_CMB_2000_003_9