1. European Commission, Joint Research Centre; Institute for Prospective Technological Studies; Sevilla Spain
2. KU Leuven; LICOS Centre for Institutions and Economic Performance; Leuven Belgium
3. Department of Agricultural Economics; Kiel University; Kiel Germany
4. School of Agricultural and Resource Economics; University of Western Australia; Perth Australia
5. Université d'Angers; GRANEM UMR-MA n°49; Angers France
6. INRA; UMR LAMETA 1135; Montpellier France
7. Montpellier SupAgro; UMR LAMETA 1135; Montpellier France