This contribution investigates the effectiveness and welfare implications of fiscal policies in a context of multilateral trade, when traders behave strategically. The present approach deals simultaneously with two aspects of fiscal policies: collecting resources for redistributive purposes and...

We investigate the effectiveness of tax and transfer policies in correcting market distortions when the economy is imperfectly competitive. We perform this analysis in the context of an exchange model representing a bilateral oligopoly situation, which constitutes a particular example of a...

This paper compares the welfare effects of ad valorem and per unit commodity taxation, in a model of oligopolistic interaction. Our main result is that, when the number of consumers is sufficiently high, per unit taxes welfare dominate ad valorem taxes.

When the production of high quality needs the employment of qualified labour, firms' decisions concerning quality are affected by the extent to which skills are abundant. By means of a comparison between monopoly and perfect competition, we show how market power in such a context may entail a...

We propose a model representing a newspaper producer suppying a product which can be acquired by the readers either every day per one unit at a time, or by subscription. The population of potentil buyers is differenciated according to the frequency at which they want to read the newspaper.