The most important economic measures are monetary. They have many different names, are derived in different theories and employ different formulas. Yet, they all attempt to do basically the same thing: to separate a change in nominal value into a "real part" due to the changes in quantities and...

Assessing the potential economic impacts of aviation policy measures is a recurrent topic. Examples of such policy measures are public investments in aviation infrastructure, the liberalisation of air transport markets, the introduction of aviation taxes or environmental restrictions on airport...

Assessing the potential economic impacts of aviation policy measures is a recurrent topic. Examples of such policy measures are public investments in aviation infrastructure, the liberalisation of air transport markets, the introduction of aviation taxes or environmental restrictions on airport...

This paper develops a model of successive oligopolies with endogenous market entry, allowing for varying degrees of product differentiation and entry costs in both markets. Our analysis shows that the downstream conditions dominate the overall profitability of the two-tier structure while the...