Wu, Tao; Shi, Leyuan; Geunes, Joseph; AkartunalI, Kerem - In: European Journal of Operational Research 214 (2011) 2, pp. 428-441
This paper proposes two new mixed integer programming models for capacitated multi-level lot-sizing problems with backlogging, whose linear programming relaxations provide good lower bounds on the optimal solution value. We show that both of these strong formulations yield the same lower bounds....