We study the organization of federations - or international unions - which decide together the provision of certain public goods. The benefit of centralization depends on the internalization of the spillovers, that of decentralization on the adaptability to local differences. We individuate as...

We model an international union as a group of countries deciding together the provision of certain public goods and policies because of spillovers. The countries are heterogeneous either in preferences and/or in economic fundamentals. The trade off between the benefits of coordination and the...

I characterize the optimal unilateral trade policy for domestic firms competing in domestic or integrated markets with endogenous entry of foreign firms. Under conditions satisfied in most trade models (as with quasi-linear or Dixit-Stiglitz preferences), the analysis is simplified by a...

With strategic interactions and endogenous entry in a market, opening up to trade creates gains under very general conditions. Under Dixit-Stiglitz preferences and Cournot (or Bertrand) competition, an expansion of the market size induces exit of domestic firms, lower prices and larger...

We survey the literature on the economics of eCommerce with particular emphasis on the antitrust debate about Amazon. The business model of such a hybrid marketplace is based on monetization through referral fees on third party sellers hosted on the platform and direct margins on own products....

Art history may be at a turning point in the adoption of a quantitative approach typical of social sciences, and this book is a brilliant manifesto for this. It will be a fascinating reading for economic historians and cultural economists, and will hopefully foster interdisciplinary research,...