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This paper studies determinants of knowledge flows as measured with patent forward citations that occur between 'input … knowledge flow matrix similar to input-output tables in trade where patent citations capture knowledge flows that go from the …
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productivity. We first estimate the determinants of knowledge flows across 141 sub-national regions in 19 countries of Europe and … North America as revealed by patent citation between US-granted patents. Then we estimate the impact of these flows on …
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complementary tools from the graphs theory to assess the betweenness centrality of regions (or poles) …
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