[1] Politecn Milan, Dept Management Econ & Ind Engn, Milan, Italy
[2] Univ Pisa, Dept Energy Syst Land & Construct Engn, Pisa, Italy
[3] Univ Napoli Federico II, Dept Ind Engn, Naples, Italy
[4] Univ Udine, Polytech Dept Engn & Architecture, Udine, Italy
[5] Univ Firenze, Dept Ind Engn, Florence, Italy