%0 Journal Article
%A John W. Morgan
%T Ergodic theory and free actions of groups on IR-trees.
%J Inventiones mathematicae
%D 1988
%P 605-622
%V 94
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1988__94_2_143638/
%F IM_1988__94_2_143638