[eng] This article analyzes the impact of mergers between retailers in a bilateral-oligopoly situation, when producers and retailers are in a two-on-two negotiation over a unit price in the intermediate market and when retailers are competing over quantity. We show that (i) a reduction in...

[eng] Quality certification through a registered designation of origin : an analytical model.. International competition on the wine market is characterised by a disparity of strategies applied by producers and wine-producing regions. We provide a theoretical analysis of the producers’ choice...