%0 Journal Article %A Kent, Richard Peabody %T Intersections and joins of free groups %J Algebraic and Geometric Topology %D 2009 %P 305-325 %V 9 %N 1 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2009.9.305/ %R 10.2140/agt.2009.9.305 %F 10_2140_agt_2009_9_305