HIGHLIGHTS
SUMMARY
Demand of customers arrives at each production system and is lost if the local inventory is depleted. Queueing theory and inventory theory are fields of Operations Research with different methodologies to optimise e_g production processes and inventory control. On the other side, the emergence of complex supply chains calls for integrated queueing-inventory models, where, as usual, the production systems are modelled by queueing systems and the inventories are modelled by classical inventories with replenishment policies. "Unfortunately it turned out that introducing state-dependent routing into product form networks usually destroys the product-form . . .
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