An Improved Particle Swarm Optimization Algorithm for Vehicle Routing Problem with Time Windows. - Qing Zhu; Limin Qian; Yingchun Li; Shanjun Zhu (IEEE Congress on Evolutionary Computation, 2006)

Memory and forgetting: An improved dynamic maintenance method for case-based reasoning. - Aijun Yan; Limin Qian; Chunxiao Zhang (Inf. Sci., 2014)