1. Department of Operations and Decision Systems, Université Laval, Québec G1V 0A6, Canada
2. Dipartimento di Matematica, Politecnico di Milano, Milan 20133, Italy
3. Department of Logistics and Operations Management, HEC Montréal, Montréal H3T 2A7, Canada
4. Department of Management, Information and Production Engineering, University of Bergamo, Dalmine (BG) 24044, Italy