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The World Economy > 47 > 5 > 2063 - 2093
Research Policy > 2017 > 46 > 1 > 219-237
Review of Policy Research > 32 > 3 > 297 - 322
The World Economy > 47 > 5 > 2063 - 2093
Research Policy > 2017 > 46 > 1 > 219-237
Review of Policy Research > 32 > 3 > 297 - 322