摘要：The impact of globalization on market concentration is in need of more empirical investigation; even if the issue is validated empirically, protesters should be lobbying for better anti-trust laws, not more trade restrictions (Bardhan). Firm heterogeneity is an important channel of transmission for monetary policy; small firms are much more responsive to monetary shocks than large firms. A large fraction of the changes in aggregate output induced by monetary shocks derives from the reaction of small firms (Cooley and Quadrini).
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