efficient network maximizing social welfare, and find that the efficient graph is either empty, complete or shows a strong core … counterfactual analyses, taking into account that the network and production can dynamically adjust to shocks or policy interventions ….6%. Our study further reveals that when ignoring the network structure the impact of firm exit or mergers is significantly …

-speci?c heterogeneity and supporting causal inference, (ii) techniques for estimating, and conducting inference on, summary network … parameters (e.g., the degree distribution or transitivity index); and (iii) empirical models of strategic network formation …