I build a simple dynamic model of the formation of an international social network of importers and exporters. Firms … can only export into markets in which they have a contact. They acquire new contacts both at random, and via their network …

I propose a network/search view of international trade in differentiated products. I present evidence that supports the …

A network/search view of international trade in differentiated products is proposed. It is shown that this view can …

Should China build mega-cities or a network of linked middle-sized metropolises? Can Europe's mid-sized cities compete …: local returns to scale in innovation, the elasticity of housing supply, and the importance of local amenities. Even if there … are global increasing returns, the returns to local scale in innovation may be decreasing, and that makes networks more …

linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 …-1994. The interaction of this pre-existing network structure with patent growth in upstream technology fields has strong …

). We present models in the literature that extend the EK model of trade to innovation, diffusion, and multinational firms …