Heisig, G.

stability planning planning stability period return system recovery order product demand model inventory production cycle setup period t planning horizon horizon level product recovery system section stock function remanufacturing planning cycles result stability function control value nervousness decision heisig fleischmann planning cycle process distribution product returns setup stability recovery model policy impact parameter figure lot sizes return rates inventory models stock level increase measure management stability level expression sequence 1 vq pq product recovery systems production orders planning cycle t cycle t stability measure analysis example disposal recovery process qt +1 research return flow paper planning horizons influence yield l 1 e-q ^ ^ ot +1 structure replenishment decisions system parameters inventory control account return rate periods t