We propose a new way to measure the extent to which countries compete in their exports. We augment the similarity index proposed by Finger and Kreinin (1979) with product quality. Quality is measured using unit export prices in the tradition of the horizontal/vertical intra-industry trade...

The economics of geographical indications (GIs) is assessed within a vertical product differentiation framework that is consistent with the competitive structure of agriculture. It is assumed that certification costs are needed for GIs to serve as (collective) credible quality certification...