%0 Journal Article %A M.V. Pimsner %T Of-groups of crossed products by groups acting on trees. %J Inventiones mathematicae %D 1986 %P 603-634 %V 86 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1986__86_143410/ %F IM_1986__86_143410