To examine cross-country diffusion of new products, marketing researchers have to rely on a multivariate product growth …

contacts. For social networks with arbitrary degree distributions we show that people who are better connected receive a higher …

We develop a model of strategic networks that captures two distinctive features of interfirm collaboration: bilateral … to invest in R&D, and the architecture of collaboration networks. In the absence of firm rivalry, the complete network …, under strong market rivalry the complete network is stable, but intermediate levels of collaboration and asymmetric networks …

into account the potential externalities networks produce. Once social ties are in place, these externalities shape the … norms are easily sustained in symmetric networks. By contrast, when an efficient interaction requires players to play …