1. Dept. of Energy, Politecnico di Milano,Milan,Italy
2. Sustainable Development and Energy Sources Ricerca sul Sistema Energetico,Milan,Italy
3. Materials and Generation Technologies Ricerca sul Sistema Energetico,Milan,Italy
4. Università di Pavia,Dept. of Industrial and Information Engineering,Pavia,Italy
5. Dept. of Techological Development Unareti,Milan,Italy