1. Center for International Cooperation and Research in Agriculture for Development (Cirad), Research Unit Marché Organisations Institutions et Stratégies d’Acteurs (Moisa), Laboratoire Citoyennetés, Ouagadougou, Burkina Faso
2. French National Center for Scientific Research (Cnrs), University of Montpellier, Centre d’Etudes Politiques de l’Europe Latine (Cepel), Center for International Cooperation and Research in Agriculture for Development (Cirad), Research Unit Marché Organisations Institutions et Stratégies d’;Acteurs (Moisa), Montpellier, France