Hadj Djelloul, Mohammed; Requillart, Vincent; Simioni, … - European Association of Agricultural Economists - EAAE - 2008
structural model is composed of a system of demand equation and supply equation. Supply equation includes a term that represents … the market power of the retail sector. We use different models of demand in order to test the robustness of our results …. We show that i) elasticity of demand varies during the year ii) the retail sector exercise only a "moderate" market power …