TY - JOUR AU - Xie, Xiangdong TI - Foldable cubical complexes of nonpositive curvature JO - Algebraic and Geometric Topology PY - 2004 SP - 603 EP - 622 VL - 4 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.2140/agt.2004.4.603/ DO - 10.2140/agt.2004.4.603 ID - 10_2140_agt_2004_4_603 ER -