1. Nordic Institute for Studies in Innovation, Research and Education (NIFU), Box 2815 Tøyen, Oslo NO-0608, Norway
2. Centre for Technology, Innovation and Culture (TIK), University of Oslo, Box 1108 Blindern, Oslo NO-0317, Norway
3. Institute of Food and Resource Economics, University of Copenhagen, Rolighedsvej 23, Copenhagen DK-1958, Denmark
4. Department of Technology Management, SINTEF, S.P. Andersens Veg 5, Trondheim NO-7031, Norway
5. Department of Management Engineering, Technical University of Denmark (DTU), Diplomvej, Lyngby 2800 Kgs, Denmark