A Two-Stage Hybrid Ant Colony Algorithm for the CVRP. - Chengming Qi; Shoumei Cui; Yunchuan Sun (CIS (2), 2008)

Concept Semilattice: Construction and Complexity. - Chengming Qi; Yingjie Tian 001; Shoumei Cui; Yunchuan Sun (ICYCS, 2008)

Using Ant Colony System and Local Search Methods to Solve VRPTW. - Chengming Qi; Shoumei Cui; Yunchuan Sun (PACIIA (2), 2008)