1Department of Statistical Sciences, Sapienza, University of Rome, Rome, Italy
2Deutsche Post Chair – Optimization of Distribution Networks, RWTH Aachen University, Aachen, Germany
3Optrail s.r.l., Rome, Italy
4Vattenfall BA Wind, Kobenhavn, Denmark
5Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy
6Department of Mathematics, University of Trento, Trento, Italy