Multi Level Bucket (Lot Sizing)
Lot-sizing problems are production planning problems in which the periods are a priori, and production of an item in a given period implies some discrete event such as payment of a cost or the loss of a amount of production capacity, due to placement of an order, or the set-up, startup, or changeover of a machine. This is an multi-item, multi-level lot-sizing problem.
Belvaux, G., L.A. Wolsey, Lotsizelib: A library of models and matrices for lot-sizing problems, Core discussion paper, Universite Catholique de Louvain, 1999.
A zip file with this example can be downloaded here.