Barriers to international trade are known to be large. But have they become smaller over time? Building on the gravity … directly from the model's gravity equation without imposing arbitrary trade cost functions. As an illustration, I show that U …

This paper derives a micro-founded gravity equation in general equilibrium based on a translog demand system that … allows for endogenous markups and substitution patterns across goods. In contrast to standard CES-based gravity equations …. I test the translog gravity equation and find strong empirical support in its favor. …

This paper derives a micro-founded gravity equation based on a translog demand system that allows for flexible … substitution patterns across goods. In contrast to the standard CES-based gravity equation, translog gravity generates an … trade flows predicted to be zero. I test the translog gravity equation and find empirical evidence that is in many ways …

This paper derives a micro-founded gravity equation in general equilibrium based on a translog demand system that … allows for endogenous markups and rich substitution patterns across goods. In contrast to standard CES-based gravity … to be zero. I test the translog gravity equation and find strong empirical support in its favor. In an application to the …

equilibrium model of trade that incorporates bilateral "ice-berg" trade costs. The model results in a gravity equation from which …