%0 Journal Article %A Cormac Walsh %T The action of a nilpotent group on its horofunction boundary has finite orbits %J Groups, geometry, and dynamics %D 2011 %P 189-206 %V 5 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4171/ggd/122/ %R 10.4171/ggd/122 %F 10_4171_ggd_122