[3]
Policy and Markets in the Agri-Food Sector Unit, University for Sustainable Development Eberswalde, Schicklerstr. 5, 16225 Eberswalde, Germany
[4]
Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal