Local search heuristics for multi-index assignment problems with decomposable costs. - Hans-Jürgen Bandelt; A. J. T. Maas; Frits C. R. Spieksma (J. Oper. Res. Soc., 2004)

Exact algorithms for procurement problems under a total quantity discount structure. - Dries R. Goossens; A. J. T. Maas; Frits C. R. Spieksma; Joris van de Klundert (Eur. J. Oper. Res., 2007)