This paper examines the impact of trade and political institutions on environmental quality in Africa and explores whether political institutions matter to the trade-environment relationship. We use data from a large group of African countries, covering the period 1990-2008 and two indicators of...

We present a model of vertical product differentiation and exit where a domestic and a foreign firm face fixed setup costs and quality-dependent costs of production and compete in quality and price in the domestic market. Quality-dependent costs are quadratic in qualities, but independent of the...