Affiliation: | 1.Management Science and Operations Research, Helmut Schmidt University – University of the Federal Armed Forces Hamburg, Holstenhofweg 85, 22043, Hamburg, Germany ;2.Management Information Science, University of Siegen, Kohlbettstraße 15, 57068, Siegen, Germany ;3.Logistics and Supply Chain Management, University of Mannheim, PO Box 10 34 62, 68131, Mannheim, Germany ; |