Mathematical Problems in Engineering / 2015 / Article / Fig 3

Research Article

A Hybrid Approach to the Optimization of Multiechelon Systems

Figure 3

(a) Example of 2E-CVRP transportation network for E-n13-k4-20 instance. (b) Example of 2E-CVRP transportation network for E-n13-k4-20 instance with logic constraints. (c) Example of 2E-CVRP-TW transportation network for E-n13-k4-20 instance.
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