| Optimal Control of Inventory Systems with Multiple Types of Remanufacturable Products Recent countries visiting this post |  |
 | 15 | United States |
 | 5 | Malaysia |
 | 3 | Singapore |
 | 3 | |
 | 1 | China |
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| Optimal Control of Inventory Systems with Multiple Types of Remanufacturable Products Recent countries visiting this post | |
| 15 | United States |
| 5 | Malaysia |
| 3 | Singapore |
| 3 | |
| 1 | China |
| 1 | Russian Federation |