Abstract In a single item dynamic lot-sizing problem, we are given time horizon and demand for in every period. The problem seeks solution that determines how much to produce carry at each period, so will incur the least amount of production inventory cost. When remanufacturing option is included, input comprises number returned products period can be potentially remanufactured satisfy demands,...

Within the framework of reverse logistics, the classic economic lot-sizing problem has been extended with a remanufacturing option. In this extended problem, known quantities of used products are returned from customers in each period. These returned products can be remanufactured, so that they are as good as new. Customer demand can then be fulfilled both from newly produced and remanufactured...

In this paper we study sensitivity analysis of the uncapacitated single level economic lot-sizing problem, which was introduced by Wagner and Whitin about thirty years ago. In particular we are concerned with the computation of the maximal ranges in which the numerical problem parameters may vary individually, such that a solution already obtained remains optimal. Only recently it was discovere...