This paper examines the relationship between countries' propensity to emit chlorofluorocarbons (CFCs) and income per capita. The main part of the analysis uses dynamic estimation methods on a panel of CFC production. In contrast to static analyses, we find statistically significant quadratic...

This paper analyzes competition between two Internet service providers (ISPs), either or both of which may choose to offer multiple service classes. In the model analyzed, a social planner who maximizes the total benefit from network usage and a profit maximizing monopolist will both form...