2[4]Bruno De Backer, Vincent Furnon, et al. Solving Vechile Routing Problems Using Constraint Programming and Metaheuristics [J]. Journal of Heuristics, 1997, 1-16.
3Liu Xiangquan,Yun Chao,Zhao Xuefeng.Design and applicationfor automated medicine depositing and dispensing system ofpharmacy[J].International Conference on Computer Science andInformation Technology,2008(3):332-336.
5Y Dumas,J Desrosiers,E Gelinas,et al.An Optimal Algorithmfor the Traveling Salesman Problem with TimeWindows and Precedence Constraints[J].OperationsResearch,1995(2):367-371.