Zhang, Zhi-Hai; Jiang, Hai; Pan, Xunzhang - In: International Journal of Production Economics 140 (2012) 1, pp. 249-255
This paper investigates the capacitated lot sizing problem in closed-loop supply chain considering setup costs, product returns, and remanufacturing. We formulate the problem as a mixed integer program and propose a Lagrangian relaxation-based solution approach. The resulting Lagrangian...