This paper highlights the importance of product differentiation and endogenous R&D in determining the optimal R&D policy, in a model where investment in cost reducing R&D is committed before firms compete in a differentiated-goods third-country export market. R&D is always taxed in oligopolies...

We experimentally test how a private monopoly, a duopoly and a public utility allocate water of differing qualities to households and farmers. Most of our results are in line with the theoretical predictions. Overexploitation of the resources is observed independently of the market structure....

In this paper we show that in a vertically product differentiation model where foreign and domestic firms compete in quantities, both firms respond by lowering their qualities for a restriction at, or close to, the free trade level. Both firms lower qualities, raise prices and earn higher...