1. Industrial Ecology Program at the Department of Energy and Process Engineering at the Norwegian University of Science and Technology (NTNU); Trondheim Norway
2. Faculty of Environment and Natural Resources at the University of Freiburg; Freiburg; Germany
3. 2.0-LCA Consultants; Aalborg Denmark
4. Department of Development and Planning; Aalborg University; Aalborg; Denmark
5. Group for Integrated Sustainability Analysis (ISA); University of Sydney; Sydney; Australia
6. Institute of Environmental Sciences (CML) at Leiden University; Leiden; the Netherlands