International commodity markets may be characterised by price or quantity competition and by product differentiation. As an illustration, we present a set of models of the Japanese market for imported beef. The models are evaluated using an non-nested econometric test. The one which best fits...

This paper focuses on price transmission in a vertically-related set-up where the retail stage may exercise oligopoly and/or oligopsony power, an issue addressed by the UK anti-trust authority investigation of the food retailing sector. From a theoretical perspective, we set out simple tests...