Localized Knowledge Spillovers: Evidence from the Agglomeration of American R&D Labs and Patent Data
2010 ◽
Vol 4
(4)
◽
pp. 323-339
◽
2014 ◽
Vol 96
(5)
◽
pp. 967-985
◽
2015 ◽
Vol 6
(4)
◽
pp. 376
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