%0 Journal Article %A Hanlon, Richard Gaelan %A Martínez-Pedroza, Eduardo %T Lifting group actions, equivariant towers and subgroups of non-positively curved groups %J Algebraic and Geometric Topology %D 2014 %P 2783-2808 %V 14 %N 5 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2014.14.2783/ %R 10.2140/agt.2014.14.2783 %F 10_2140_agt_2014_14_2783