@article{Kaczmarczyk_2009, title={Modelling Multi-Period Set-up Times in the Proportional Lot-Sizing Problem}, volume={3}, url={https://journals.agh.edu.pl/dmms/article/view/545}, DOI={10.7494/dmms.2009.3.2.15}, abstractNote={<p>This paper presents new mixed integer programming models for the Proportional Lot-Sizing Problem (PLSP) with set-up times longer than a period. Proposed models explicitly calculate the distribution of times amongst products in periods with a changeover and determine a final period for every set-up operation. Presented results prove that the proposed models are easier to solve using standard MIP methods than already known models.</p>}, number={2}, journal={Decision Making in Manufacturing and Services}, author={Kaczmarczyk, Waldemar}, year={2009}, month={Dec.}, pages={15–35} }