Kerivin, H.L.M.; Lacroix, M.; Mahjoub, A.R.; Quilliot, A. - In: European Journal of Industrial Engineering 2 (2008) 2, pp. 112-133
In this paper, we consider a variant of the Pickup and Delivery Problem (PDP), where any demand may be dropped off elsewhere other than its destination, picked up later by the same or another vehicle, and so on until it has reached its destination. We discuss the complexity of this problem and...