This paper examines the role of product differentiation within the model of Sartzetakis (1997, 2004) and shows that consumer surplus may be reduced under a tradable emission permits system rather than a command and control system when there is a high degree of product differentiation or less...

This note reexamines the model of tax evasion of the monopolistic firm with profit taxes by incorporating the firm's strategic behavior for tax avoidance. It is shown that under certain conditions, the monopolist's decisions on output and expenditure are no longer separable from the evasion...

This paper considers the issue of quality differentiation in an online information market in which one network provider and two content providers compete over both prices and con-tent qualities for the real-time network delivery of digital information products. We examine the order of plays in...