Sellare, Jorge; Meemken, Eva-Maria; Kouamé, Christophe; … - 2019
of cooperatives, as previous studies did, it is not easy to disentangle certification effects from possible cooperative … non-certified farmers. Certified farmers are typically organized in cooperatives. When sampling only from a small number … effects. Here, we address this shortcoming by randomly sampling from a large number of cooperatives, thus capturing a wide …