%0 Journal Article %A Jeffrey R. Butz %T Unitary parts of generalized Hankel operators %J Colloquium Mathematicum %D 1978 %P 159-165 %V 40 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-40-1-159-165/ %R 10.4064/cm-40-1-159-165 %G en %F 10_4064_cm_40_1_159_165