1. Yale School of Forestry & Environmental Studies; Center for Industrial Ecology; 195 Prospect St. New Haven CT 06511 USA
2. Bologna University; Department of Industrial Chemistry “Toso Montanari”; Viale del Risorgimento 4 40136 Bologna Italy
3. Anthesis; 1900 Powell Street Emeryville CA 94608 USA
4. European Commission; Joint Research Centre; Via Enrico Fermi 2749 Ispra 21027 Italy