%0 Journal Article %A A. Guvan Robertson %T Property (T) for ... Factors and unitary representations of Kazhdan groups. %J Mathematische Annalen %D 1993 %P 547-556 %V 296 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165099/ %F MAN_1993__296_4_165099