Innovative Activity in Wind and Solar Technology: Empirical Evidence on Knowledge Spillovers Using Patent Data
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2008 ◽
Vol 20
(2)
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pp. 281-298
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2008 ◽
Vol 4
(4)
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pp. 453-465
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2019 ◽
Vol 146
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pp. 297-303
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2015 ◽
Vol 195
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pp. 614-623
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