%0 Journal Article %A Narcisse Randrianantoanina %T Spectral subspaces and non-commutative Hilbert transforms %J Colloquium Mathematicum %D 2002 %P 9-27 %V 91 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm91-1-2/ %R 10.4064/cm91-1-2 %G en %F 10_4064_cm91_1_2