To the surprise of many, price deviations between markets characterized by imperfect competition have often been little affected by lower transport costs. In a Cournot model we show that if firms' decisions to segment markets are endogenous, then lower transport costs are, in many cases,...

The labor-supply elasticity is a central element in many macroeconomic models. We argue that assumptions underlying previous econometric estimates of the intertemporal labor supply elasticity are inconsistent with incomplete markets economies. In particular, if the econometrician ignores...

For Swedish newspaper firms, a market with high switching costs, the subscription market, and a market with low switching costs, the advertising market, are of approximately equal importance. When Sweden enters a deep recession, we find that liquidity constraints influence the pricing decision...