6Nanry W P, Barnes J W. Solving the pickup and delivery problem with time windows using reactive tabu search[J]. Transportation Research Part B, 2000, 34(2): 107-121.
7Currie R H, Salhi S. A tabu search heuristic for a full-load, multi-terminal, vehicle scheduling problem with backhauling and time windows[J]. Journal of Mathematical Modeling and Algorithms, 2004(3): 225-243.
8Lin C K Y. A cooperative strategy for a vehicle routing problem with pickup and delivery time windows[J]. Computers and Industrial Engineering, 2008, 55(4): 766-782.
9Ball M O, Golden B LI Assad A A, et al. Planning for truck fleet size in the presence of a common carrier operation[J]. Decision Sciences, 1983, 14(1): 103-120.
10Skitt R A, Levary R R. Vehicle routing via column generation[J]. Computers and Operations Research, 1985, 21(1): 65-76.