Finding Behavior Patterns and Evaluating Orderliness of Dynamical Systems by Spanning Tree Invariants，QUALITY & QUANTITY, vol.43 no.6 pp.1011-1023 SCI 2009 謝俊逸(Jiunn-I Shieh)、吳信宏(Hsin-Hung Wu)、楊偉儒(Wei-Zu Yang)