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Firm density and industry R&D intensity: Theory and evidence Lee, Chang-Yang, REVIEW OF INDUSTRIAL ORGANIZATION, v.22, no.2, pp.139 - 158, 2003-03 |
The relationship between R&D concentration and industry R&D intensity: A simple model and some evidence Lee, Chang-Yang; Noh, Jaesun, ECONOMICS OF INNOVATION AND NEW TECHNOLOGY, v.18, no.4, pp.353 - 368, 2009 |
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