Foldable cubical complexes of nonpositive curvature. Xie, Xiangdong — 2004 Algebraic & Geometric Topology
Feedback control variables have no influence on the permanence of a discrete N -species cooperation system. Chen, Liujuan; Xie, Xiangdong; Chen, Lijuan — 2009 Discrete Dynamics in Nature and Society
Uniqueness of limit cycles for a class of cubic systems with two invariant straight lines. Xie, Xiangdong; Chen, Fengde; Zhan, Qingyi — 2010 Discrete Dynamics in Nature and Society
Stability results for a class of differential equation and application in medicine. Zhan, Qingyi; Xie, Xiangdong; Zhang, Zhifang — 2009 Abstract and Applied Analysis