TY - JOUR AU - Calegari, Danny AU - Zhuang, Dongping TI - Large scale geometry of commutator subgroups JO - Algebraic and Geometric Topology PY - 2008 SP - 2131 EP - 2146 VL - 8 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.2131/ DO - 10.2140/agt.2008.8.2131 ID - 10_2140_agt_2008_8_2131 ER -