Theys, Christophe; Bräysy, Olli; Dullaert, Wout; Raa, … - In: European Journal of Operational Research 200 (2010) 3, pp. 755-763
In this paper, we deal with the sequencing and routing problem of order pickers in conventional multi-parallel-aisle warehouse systems. For this NP-hard Steiner travelling salesman problem (TSP), exact algorithms only exist for warehouses with at most three cross aisles, while for other...