We develop an equilibrium model of industrial structure in which the organization of firms is endogenous. Differentiated consumer products can be produced either by vertically integrated firms or by pairs of specialized companies. Production of each variety of consumer good requires a unique,...

During the last two decades new research has greatly advanced our understanding of the structure of world trade. This article reviews the empirical literature that grew out of this effort. I emphasize the interplay between theory and empirical research that was an important driving force behind...

The empirical analysis in "International R&D Spillovers" [Coe, D., Helpman, E., 1995. International R&D Spillovers. European Economic Review, 39, 859-887] is first revisited on an expanded data set that we have constructed for the purpose of this study. The new estimates confirm the key results...

We develop a tractable framework for the analysis of the relationship between contractual incompleteness, technological complementarities, and technology adoption. In our model, a firm chooses its technology and investment levels in contractible activities by suppliers of intermediate inputs....

In recent research, we have proposed a new framework for examining the determinants of income inequality, which emphasizes firm and worker heterogeneity and selection into export markets. In this paper, we use our framework to examine how wage inequality and unemployment vary across workers with...