1. Department of Agricultural and Food Economics Università Cattolica del Sacro Cuore Piacenza Italy
2. Department of Economics and Social Sciences Università Cattolica del Sacro Cuore Piacenza Italy
3. Department of Business Administration Università di Verona Verona Italy
4. European Commission, Joint Research Centre (JRC), Directorate for Sustainable Resources Seville Spain
5. Department of Environmental Science and Policy Università degli Studi di Milano Milan Italy